First of all. You are the artist, the creator. The styling should be done so that you are pleased, not me.
I think the biggest issue is what material you started with. Formal upright really need a lot of taper to look good in my opinion. It can develop after initial styling as well. But it takes decades.
I don't know how the tree looked like before styling. So very hard to tell if there where other options. Generally speaking, creating an image of an old tree involves atention to proportions. Thicker branches down low and thinner as you go up the tree. Here it seems like you ended up the other way around.
Next time, if you have design questions, ask them before doing the work. There are not anything to do now.