MontaeIsHungry

Thank you for the compliment, but I'm not sure why you'd ask me, since your art is already so beautiful. Really, I think your gallery is more impressive than mine, but I can try.
For animations, I think maybe you could improve by having more expressive movements. Focus on where the motion begins and how it flows through the object.
You already seem to understand how to achieve a good composition and style and have put in a lot of practice to implement that. 
The only thing I could think to say for your artwork is depth and proportions are occasionally a bit off, but that's something I think continually practicing can help with. Maybe try so anatomy and pose study?
All you need is the want to improve and then put in a lot of practice, neither I think should be a problem for you
Hope this helps any. Best wishes

Thanks