Saw this image on the front page, and the style immediately caught my attention, so i'll give the critique a shot ^^

First of all the face of the fox is really cute and cartoony, but still has the features of the actualy animal, so good job! The colour choice is thumbsup aswell!
The overall size and proportions are nicely done aswell, though the front legs seem a bit short, even for a fox. Back legs are very tricky to draw, especially in sitting positions, so i'd suggest studying a few photos in a similar angle, since it seems a little unnatural on your drawing.
The last point for anatomy, is the tail. I've seen this mistake in several people, that the tail just comes out of somewhere on the body. The tail is an extension of the spine, so if you curl it from above her bum, it will look more natural.
The last thing i'd like to point out is that perhaps it would look a bit more alive if you gave it some more shading, especially around the face

Overall it's a nicely done picture in a very cute style, good job! ^^