Help with Render

[Nameless]

First off you should be proud of the picture as it is and it sounds like you are. The linework is strong with very few sketchy parts. I would suggest working out a lighting approach before you even begin or very early into your rendering. This will help you as you render to keep the focus of the piece where you want it to be. It will also help to keep your piece cohesive. It may help to take a picture of yourself in this pose with the lighting system you want to use. Although you do not have the same costume (or maybe you do) you can still use that image to give you a general idea of how to begin adding value. A little added tip from someone who catches himself doing it all the time....do not over render. Save the tightest detail and heaviest contrast for the areas that you are looking to draw focus.

There are others far more qualified to help you in this area but I hope this helps

Also for rendering tips check out enliighten.com (mike "daarken" lim) or FZDschool's or scott robertson's channels on youtube