good base. your back looks more impressive than i would have expected from your front pic after seeing the back pic. you need some more mass on your lats, shoulders, and arms. it will make your impressive tatts look more, well, impressive.
as a sidebar, what do you all think of tatts these days? i have been thinking of getting one or more but so many guys have them these days they are seeming kinda tired. i am considering getting one on the rear of one of my well developed calves to start. i really like forearms tatts ,but since i am an insurance man and wear short sleeves a lot with clients i thought it would be inappropriate...