+1 on what sportrider fz6 said. Also, be prepared to have the sh** sacred out of you the first time the wheel starts to come up higher than you expect. The first thing your going to do is chop the throttle and come down hard so be ready for that too. Take you time and don't go for too much, too soon. Mentally prepare yourself before each attempt and stay calm. Wheelies are something that you have to practice and it can take a while to get them consistent so don't expect to be "Evil Kanivel"( I don't know if that's spelled right.) any time soon. Also, you'll probably smash your "Jewels" a few times while your practicing so be ready for that too. Good luck and uh..... be safe?
Oh yeah, I don't think I'd use the word "bash" when I'm talking about attempting a wheelie. LOL