Just the texturing in the leaf for one thing, it really took skill to do it this well. And where you had to trace around his foreparts, it looks very much like you've blended in a subtle little shadow effect. This looks good.
Thanks so much for the wonderful comment! ^_^ This was actually my first time using oil pastels properly, they are quite messy and hard to control but it was a fun experiment hehe. And I have just always been shy though in the last 2 years or so I've gotten a bit more confidence I think hehe