You should probably look for people with instruments, maybe like a guitar or something.
if u want a serious band u need serious people, so look out for people with talent, and not those bums that say there musicians wen they dont know anything.
just make sure that you find people who are relatively good at whatever instument they play, having to explain every single aspect of what you are playing and what they are supposed to play sucks, hendrix once beat the shit out of his bass player just for not playing what jimi wanted him to, which i could believe because it gets very frustrating...another tip is to play a few covers just to make sure the band can get syncronized before writing your own music