::)
dude you literally have a spot on your profile to see your signature...
what he said.
personally i like to paste my signature in a reply box, then press "preview post" to see what it looks like, but yeah: you can click "summary" under "profile" up there to... see your profile.
that said, you need to use [img][/img] tags instead of [sigpic][/sigpic], but points for creativity.
and there's the ol' "make sure that you have at least three words in your post" deal that i'm contractually obliged to mention.