Lattjo Lajban - Painting

Been working on this digital painting to my sister for her birthday yesterday. I concider it finished though I still feel like some more detailing could be added. But at the moment I have trouble seeing how to proceed and therefore I will let it rest for a while. 
The rabbit was a pet of my sister when we grew up. His name was Lattjo Lajban and he was a real character. More like a dog/human than a rabbit. A very special individual worthy of many paintings.