From the looks of it, you've seen some Rankin Bass cartoons, and were inspired. The background is a beautiful burst of nostalgia for me, as the mix of mahogany and gold match well with Ember's dragon shape. I also enjoy how the gem is saturated, so it doesn't draw the attention away from Ember's own colors. The only way this could have been better is if the gem had particles or little magic trails coming out of it, almost as if it's dripping energy. All I have to say is well done indeed. Not only did Ember get some more deserved attention, but the background gave me a nice blast from the past.