I did most of the background at work yesterday (suns and grass), so I did it mainly by remembering the descriptions he gave of Gallifrey, up to the point I had watched at least. I looked up descriptions online saying it had an orange sky, and wow, that sure is a lot of warm color.
I didn't know what to do with the background, and didn't want to spend forever on it. OTL cuz when I do backgrounds...I do them waaaay too detailed. LOL (you'll see in my upcoming LoZ picture XDD)