Character and narrative- Background progress

I have been concentrating mainly on painting over my 3D modelled backgrounds in Photoshop recently, which proved to be a much more time consuming process than I first expected. I had alot of trouble painting the shadows and getting the perspectives right. I eventually figured out a more efficent way to do this; by using the polygon selection tool and then filling in the selection with a gradient, I lessened my workload and was able to work much more quickly. I have also begun doing keyframes over the unfinished Maya backgrounds which are acting as placeholders at the moment.