I polished the lips on my wheels a few weeks ago. Tip: try the airplane stripper method. Sandpaper SUCKS. Took me 6 hours, from 160 grit to 400 grit.
I also did some plastic welding on the fairings, prepped them, and had them sprayed in carbon black. Bike bodywork is so easy! i think anybody can do it with a few good supplies. But you do need a professional painter.
I modified the exhaust. now its a shorty pipe, and it is much louder than the after market pipe's i've heard.
Lastly, that i can remember, got the seat reupholstered by luimoto. I definately recommend them, great prices and great materials.
I dont have any how-to's, but i can answer any questions about these types of mods...