the artsiest I've ever gotten with my nails is painted them with black and white checkers. it looked really nice though. of course, I'm nowhere near as talented as you.
I just do plain black nails. ALWAYS. seriously. I can't go without it. if I don't, I feel funny whenever I look down. I've been doing it for like a year and a half now, so I'm that used to it.
if I can find the pic of my checkered nails I'll post it.