Femboy Shaymin Butt WIP Sketch (Patreon)

I'm taking suggestions and feedback for this sketch. Some things look a bit off to me and I can't quite put my finger on it. If you think you can see it, let me know. Aside from that, if you think something should be added to this pic, also let me know. The theme of this pic is an Autumn themed Shaymin, so his colors will be more orange than green.