Tattoo Hand Studies

I want a tattoo so badly but I think I'm too fickle to decide on just one thing I want for the rest of my life. I've been reading about mehndi henna painting lately and I even bought a henna kit but I haven't worked up the courage to give it a try just yet. It has a sort of strong smell to it. Anyway, it gave me the idea for these watercolor hand studies. The hands are all from reference photos but I added the tattoo designs out of my noggin. They're all about 9x12 or so.