Jay Maynard's Linucon costume: General Xinchub
The character
This character is from Howard Tayler's excellent web comic strip, Schlock Mercenary. General Levaughn Matsui Xinchub is the head of military intelligence of the United Nations of Sol. He is a major figure in the UNS military, since Intelligence has been split out into its own branch. He, like his 21st century intelligence counterparts, is responsible for not only interpreting and explaining intelligence, but also running covert operations to gain it. He is absolutely ruthless in this pursuit. Everyone and everything is expendable, and nobody and nothing will get in his way. This does not endear him to his colleagues, but he doesn't care, since he's got a mission to accomplish.
Here's a picture Howard drew so you can get a better view of the General:

I selected General Xinchub because, out of all of the characters in Schlock Mercenary, he is the only one whose body type resembles mine. Everyone else is in at least good physical shape, as one would expect from fighting men and women.
The costume design
The costume is designed to match General Xinchub's uniform as closely as possible with 21st century materials. Howard's description of the uniforms worn by Tagon's Toughs and the UNS military:
Low-profile body armor is a skin-tight suit woven from 'powered fullerenes.' This means that the fullerene tubules (carbonan is a brand I've referenced in the strip, but I believe there are other elements than carbon that can make good fullerene tubules) have a power source that strengthens their molecular bonds artificially, and that offers a rigidifying field under impact. The best suits also have limited gravitics, which allow for flight and for compensation when you're hit by a projectile that throws you against a wall.
So what does it look like?
1) skin tight.
2) Shirt can be taken off separately from pants (mostly for plot purposes -- I've needed to show characters 'dressing' without showing them stark naked)
3) The belt, collar, cuffs, and ankle-cuffs are stiff, and conceal gloves, helmet, weaponry, and the marble-sized annie-plants that power the fullerenes.
4) Boots are big.
5) helmets are low-profile... little more than a padded cap (only loaded with future-tech that protects your head better than a full motorcycle helmet with a kevlar shell would today)
6) epaulets hover. If I wanted to build these, I'd use 3cm of wire painted to match the uniform shirt, and mount a styrofoam epaulet on top of this bristle, which would in turn be mounted on a thin metal plate about the size of a silver dollar, and formed to match my shoulder.
This presents some challenges, but not major ones. I thought, after the TRON costume, that this would be a piece of cake. I was only partially right.
The pieces
The leotard
First, the top. The uniform shirts do not have visible closures, although characters are shown fastening collars and such occasionally. This means that a pullover is needed to avoid having to use a zipper. After my experiences with the TRON costume, I also decided that a dance belt would be obligatory. Finally, I didn't want a skintight top to creep up on my torso and add wrinkles that wouldn't look right.
The solution: A thong leotard with a snap crotch. This goes on like a
shirt, won't creep, and, like a dance belt, will provide support without
showing lines under tights. I went back to Renaissance Dancewear and
ordered one custom-made, with gold metallic spandex collar 1-1/2 inches tall
and cuffs 1/2 inch long, and dyed to match the olive drab used in the strip.
The darkening you see in the lower part is the tights I have on
underneath showing through; the leotard itself is one uniform color.
The tights
The pants in the strip are shown in a dark grey to allow Howard to show
motion and details, which don't show up well in printed black. We decided,
though, that the actual uniforms are black, since that looks better in a
military context. I decided to have the belt and cuffs sewn into the tights
so they wouldn't shift position and the tights legs wouldn't ride up over
separate socks. The belt is 2 inches wide, and the cuffs one inch; both are
the same gold metallic spandex as used on the leotard.

The stars
As noted above, officers' rank insignia hover over the wearer's shoulder.
General Xinchub's three stars would be easy, I thought. It turned out to be
harder than I thought to find metal stars with some thickness to them, but
my roommate found some at a local scrapbooking shop. I ground off the spikes
on the rear that were intended to hold them to a piece of paper, then
painted them gold (they were silver originally), and epoxied them together
in pairs with a piece of steel welding wire in between across the flat part
to hold the three together and a separate wire down from the center of the
middle star to hold them up. I put a piece of black heatshrink tubing over
the vertical wire, and epoxied two rare earth magnets to the bottom. I cut a
stitch or two out of the middle of each of the leotard's shoulder seams, and
inserted the magnets through these holes, then slid another magnet onto my
shoulder inside the leotard to hold the piece in place. This wasn't entirely
satisfactory, as I need to use stronger flat magnets, but it did work well
enough.

The medals
The colored rectangles General Xinchub wears are the medals he's received
over the years. I studied the strips and came up with a design for the
badge:
Howard told me that he'd intended to have the bottom row be a mirror
image of the top row's dimensions, but that I'd gotten it closer to the strip
than that, and he would take it as I had it.
Making the badge turned out to be quite difficult. I was unable to
achieve the precision I wanted in either size or making the edges square
with each other. The result passes the 3-foot test, but I want to redo it
whenever I can figure out how to cut sheet plastic precisely. The plastic
itself was cut from storage bins I found at a local dollar store.

I glued a simple badge pin to the back to hold it on.

The blaster
General Xinchub has not been shown in the strip with a sidearm, but Howard and I agreed that he'd have one, and be quite practiced and deadly with it. After all, he has made a lot of enemies over the years. In this strip from 2002, Sergeant Schlock examines the latest product from Strohl Munitions, the model AP-130 blaster. We decided that that would suit General Xinchub well, as he does not need a flashy sidearm to proclaim his power - just one that is fast and deadly.
Political correctness reared its ugly head when I went to look for pieces
to make this. I had a hard time finding a toy gun that looked like a modern
pistol. I finally procured one at the other local dollar store. I cut it off
forward of the grip, cut away the top to accept a ping-pong ball (which
represents the power plant), and glued plastic over the front of the grip
where the barrel and trigger had been. I soldered three pieces of 1/16 inch
brazing rod to the end of a piece of 5/16 inch brass tubing for the barrel.
I painted the barrel silver, the grip gunmetal gray, and the ping-pong ball
teal green, glued 1/8-inch gold beads to the ends of the brazing rods, and
assembled it all. I added magnets to the left side to hold it to a metal
plate I slipped inside the belt of the tights.

The shoes
Most of the uniforms include big boots, as Howard noted. General Xinchub
is shown wearing dress oxfords, however. I decided that it would be best in
keeping with the strip if I didn't use traditional dress oxfords, but rather
work shoes with similar styling and thicker soles. My shoe size is a bit
unusual, so my selection was limited, but I finally found a pair of Red Wing style
8618s in my size.

The finished costume
Here's a full-body picture of the finished costume, taken right after the Masquerade:
and one with me and Howard, taken the next morning:
The Masquerade
I'd written a speech, cut down from the speech at the beginning of the movie Patton, that ran about 45 seconds. I'd planned to give it, then march out. It didn't work out that way: I got the first line out, then forgot the rest of it. Damn damn damn. I'd hoped to have a real chance at the overall grand prize, but that lost any hope of it for me.
I did win two awards: one for best workmanship in accessory design and construction, and one for "most daring escape from a 2-dimensional art form". They discussed giving me an award for "best attempt to make a judge recuse himself", as Howard was one of the judges, but didn't.