I'm currently in art school, I intend to work in animation, I do art all the time.
When I started T, I definitely didn't notice any changes in my art that I could put on the T. Every change I have noticed in my art has been normal reactions to art school- I don't make much of anything personal anymore because I use up all my creativity on school projects, so I no longer do art to relax. I know it isn't permanent at all because I draw a ton for personal art during breaks. My class projects haven't suffered because of T at all.
Although, I would say more of my personal art is much more emotional than it used to be, as I can no longer cry out my feelings very often. I've had a lot of stress in my life outside of school that've been progressively getting worse and I used to cry out these sorts of frustrations, however, now I rarely cry, and when I do, I am simply drained afterwards without much relief. So when I do get chances to do personal art, it tends to carry more of my emotions within it. So I guess my personal art has gotten a little more polarized, with pieces with very little emotion (doodles and such, things for when I just feel like drawing) or they're very full of pent up emotions (more of the bigger, finished pieces).
I don't know if this answers your question at all?