Now were going, great stuff folks. I'm still going to hint at lighting. Now that you have your scene set up experiment with some lighting. If you need tips on lights just check the old WIP contest threads we have one that might give you some ideas.
This is still in its very early stage, I am thinking about turning it into a grindhouse type movie poster. Having a real problem trying to get the hand grip right.
@ wilmap - love the lighting in your second image.
Wow. I really like the camera and angle for this one. Lets see how to help you out....
Okay to get your hand pose just right try this. I'm sure you have the scene saved and the Render camera saved. So try this, load your scene and select just the hand you need to pose. Now switch your viewport camera to the Perspective Camera, and center on that hand, you can zoom in and move around and do the little tweaks the hand needs. To check your work just switch back to the Render camera to see what it will look like in the full render. I do this for fine tuning a pose all the time.
If your afraid you might forget which camera your in and move the RENDER camera, just Select it (Render Camera) in the Scene tab and open it in Parameters and LOCK it. Then you can not change it. Easy way to be sure the Render will stay the way you want and do the tweaks you see need work.
Bluemoon, I have to agree with Jaderail, that's a great dramatic camera angle, and Jaderail gave you some good comments.
I'd like to add one more. As much as I like this, I would like you to try making it a drop wider, because as it is your main character is cut off on the right side. I don't mind that you don't see her legs as it's more or less almost a closeup, but with the right side cutting into her body, it just looks like you cropped a larger image badly.
To do this, try moving your render camera out (Z Translate) a little bit at a time until you have enough space between her body and the right side to almost equal the space between her gun and the left side. To me good scene composition is as important as good lighting.