I have a few things that could improve this drawing,if you don't mind.
May I begin??
One thing is,the snout is a bit too short,and the eyes look spooked.Just a bit.
Another thing is,the body is slightly too fat compared to the arms and legs.Foxes are sleek,and have to be fast to survive.Keep that in mind.Also,you may want to make the tail a bit furrier looking,and add some black to the arms and legs,also the tips of the ears.Other than that,this is great!!Keep up the good work

!!!