It feels like the text is an afterthought compared to the strength of the illustration. I'd agree with Allan as far as lineweight variation, especially in some of the outer parts of the man's clothing, maybe? Or facial definition...
But what bothers me the most is the seemingly minute amount of time spent on the text compared to the eye-catching illo. I wouldn't comment more than five words(if at all) if I didn't think you had something going. Keep it up.
Personally, I don't mind this at all. The illustration's cool, although there could be more variation in the line weight...maybe?
At any rate, I think this poster does it's job just fine. The advice above was just my 2 cents...there are folks here that have been doing this for much longer than I have.