in my experience women like mystery, if on a first date you put all your cards on the table then they know everything so whats the point!??
don't say "you are what i've been looking for, your perfect!" this is not only slightly scary but intimidating, just compliment.
also try to compliment the less obvious, if the girl is beautiful and has amazing eyes don't mention this (untill later on) mention something else, also if they seem to be intelligent complment their beauty, if they are beautiful complement their wit, intelligence...
you will then stand out from the usual, and will show you interest in her finer points, but only give a couple to show you do like her.
and don't give too much away, don't ramble on about yourself, give bit's if she asks questions answer, if not move on and save some for another time. it's fine to sit and listen, comfortable silence is a sign of great potentual.
so stay slightly mysterious, don't complement the obvious, and don't ramble on and you will start off fine.
good luck bud!