I once said I like Celestia more than Luna. However, pics like this make me ask myself if I spoke too soon. It's a good pic. Don't worry about having too much to do. If you fell inspired, fulfill that inspiration so it won't claw at your mind while doing other things.
That "Luna: Children of the Night" video was pretty cute, and well-done. (Can't wait to see the finished version.) Great humanized Luna pic, it's pretty impressive for a "sketch." Your coloring style has a very "painting" quality to it, and detail alone is quite impressive to me.
"CHANGE OUR APPROACH?!" (lol I couldn't resist quoting her, sorry.)