For the sakes of your own sanities, do not, I repeat not:
1. Try to play anything different than you are comfortable with.
2. Try to play normal blindpick
3. Expect the other team to have a shred of self decency.
I just made this major mistake with Tristana, not played her since i first started playing, thought i'd give her a whirl on dominion normal blindpick.
Came against a team featuring Jax, Singed, Rammus and Xin.
Our team couldn't do much, the enemy team were a bunch of pre-teen smack talkers.
In future, I'm sticking to draft and what I know, I urge you to do the same.