yo man that's good. everyone starts somewhere. I like the color choice, like the graffiti style. looks good. When it comes to alot of art, I'm super precise with my pencil/pen work. so when I realize my hand is fucked up, or i spend a shit load of time on a small section, i know i did a good job. as long as you're satisfied with it that's all that really counts.
keep it up!