Everyone develops their own habits, watching someone else work might not be all that beneficial. I think at best you might see creative ways to manipulate patches, brushes and general shortcuts that cut production time down. A lot of the "thought process" takes place long before the editor is open. Drawing top down sketches occasionally, but mostly making lists of gameplay elements and how they interact with each other. What you can do to improve these elements and then add to them by creating your own dynamics. I'm just saying, the video would be 90 percent commentary explaining what one is doing and why, rather than mind blowing brush manipulation. Might be cool. In any case, this book is fantastic and can help you see the craft you practice in a new or different light. http://www.amazon.com/The-Art-Game-Design-lenses/dp/0123694965/ref=sr_1_1?ie=UTF8&qid=1387850889&sr=8-1&keywords=The+art+of+game+design Also this: http://www.amazon.com/The-Design-Essays-Computer-Scientist/dp/0201362988/ref=sr_1_1?ie=UTF8&qid=1387851024&sr=8-1&keywords=the+design+of+design