Not bad for a #1 weakness

I'm clueless when it comes to tree, but I have a single hesitant suggestion -- would it help if some of the branches showed through?
Also, maybe I am wrong about this because I have never studied trees at all, but I always thought the trunk grows more or less vertically up to the top of the tree, eventually narrowing to the size of a branch but not just stopping. On your tree, the stump kind of stops, and then all the branches branch out like flower petals. I guess it's just a really quick transition from thick to thin, and I am not sure if trees work that way.
But maybe I am giving you nonsense advice.

I think it looks great overall!