That's a very nice looking first image. What I would do to make it have just a bit more graphically pleasing is to either fix the text or remove it, fix the edges of the cut out guy with not so much feathering, maybe have some of those lines loop throughout his tail or his weapon (aka have some lines over top of the character), and add a bit more texture to the background. But extremely nice job for your first work. It looks very cool!