@ 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.... 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.
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.