I find, for 1x1s, I like something pretty short and sweet. (Name/Age/Appearance/Personality/Short Bio.) For group RPs, I'm fine with longer ones - that's what I first started RPing with, actually. Theme song and everything included.

I find I'm willing to go even shorter with people I've RPed with before - if I like their style and characters, I might not ask for a CS.

For 'faceclaims', I hate using real people. I feel very weird about it. I'd much rather use a drawing or a doll-maker image. (Preferably the doll-maker for customization options.)