I love Aaron B! This is actually not a bad painting at all. I would suggest one thing to really "complete" it for me... there's a nice C- shaped gesture you created with the hair direction in the mane. Where the mane comes against the smoother fur of the back, the gesture gets cut off. It just stops. I would continue those strokes into that area, eliminate the totally flat brown area of the bottom left corner. Where the hair touches the blue green background at the neck and the crown of the head, I'd soften the tension from the one color to the other a bit. Very nice convincing lion that I'm sure Aaron would enjoy