Silhouette tattoo, trees, birds, arm tattoo, black ink
50 Tree Tattoo designs for Men and Women http://beachgirlphotogallery.animoney.net
75 Graphically Gorgeous Geometric Tattoos - BuzzFeed Mobile Somewhere, I've seen a picture of a tattoo of the golden ratio. I thought it was kind of amazing.
Triangle tattoo .In math the triangle is the symbol for change.
Undercut. Great texture on top. Very well done.
Awareness / Humility / Sacrifice / Dependence