Now, erm, this just occured to me.... How do I bind??? XD im sorry if that was a weird question lol
Well one things for sure on that... DON'T use Duct Tape. I think I saw a topic about binding somewhere around here(or I might not have XD), if not then theres probably a good one on cosplay.com, or on Deviant art. Most People use ACE bandages and just wrap around. http://browse.deviantart.com/?qh=§ion=&q=binding+cosplay#/d2q0qco Theres some other methods as well. But they vary.
^Well actually, I used duct tape and it looked really really good. The trick is to not use it on your skin, but on a tank top, preferrably one you don't mind destroying. XD The only reason I don't use duct tape now, is because I don't feel like paying over and over for new rolls.
@apgirl: Duct tape in my personal experience is really comfortable, and gets me extremely flat. Now, ACE bandages tend to hurt more, but that is again personal experience, probably because ACE bandages are designed to constrict more as you move, so when you breathe it gets tighter each time.
I now use a cheap corset, but it's worn upside down and laced as tightly as possible on the top. XD It is less effective than the duct tape but soooo much more comfy.
Again, all of this is based on personal experience, you'll probably have to try different methods to see what works well for you.