Well, I'm just starting, and you certainly have more time in this than me, but I would suggest to show the all the trunk in the tree... I mean remove those leaves that cover the main trunk... besides that, only redirect some branches to have them all in the "same" angle... But I really love your tree... it's amazing... I wish I can get my trees looking so nice someday... good luck, and don't do a thing until you read more posts (because, I'm a begginer, maybe I'm saying only the wrong things
) bye