I wasn't sure what I was going to make, but I just picked up the piece of rejected 18 gauge off of the floor. I had been making some Christmas presents earlier, and this was a small piece about 6" x 10" that was laying on the floor.
Still had no idea what to do with it, but as I got to pounding on it I though I would make a little mini-bike type fender. I used a combination of a teardrop mallet and sandbag, a shrinker/stretcher set (only used the shrinker though), and my e-wheel (that still lacks the extra gusseting it needs).
I think it came out pretty good. It actually matches the contour of my motorcycle's front tire. Seems pretty consistent front to rear.
Know I'm getting excited about all this stuff. I am building a mini-chopper, so I know I definitely want to do the fenders, and maybe even a tank. I want to build an off-road go kart sometime too, so I may make some body panels for it. Here are the pics: