Nice! Even ponies like massages, it seems. You're doing fine with the drawing. Hands, I think, are the most difficult, but those look just fine. They fit right in with the nature of the rest of the piece despite some specific details. Frankly, those details (finger joints) aren't really necessary and, personally, I think adding them would add too much detail when you're supposed to be focused on the pony anyway. Detail that would draw the eye away from the main focus, that is.