It does look a little plain, but I like it.

I'd keep it small, maybe just a little bigger then it is. Get it on the back of your neck, or on your wrist, or up near your elbow on your forearm.

Shhh dude I have a big R2D2 tattoo on my wrist/forearm

Yeah the neck was my first thought.
I think it would look cool if it was almost at the side of your neck, on the back just at the side...so you can't see it facing you, but you can see it from the side. You know what I mean?

i neeeeeeed that tattoo.