I think this is very good for a start, but it has a lot of problems with lines. I suggest you read up on perspective (it's not really that hard, you just have to know what you're doing) and rework the lines so the feet are more similar in size and shape and so the legs are fixed: right now they look like you drew in the feet and body then just connected them to the legs with some bendy things that're like the ref's legs.
You could really benefit from looking more at the reference; you would add a lot to the piece by adding the little details on the legs.
I do like the eyes, though, they look very crisp. Unfortunatelky, they, too, have perspective issues. You'll want to make the closer one larger as a start and you'll probably want to skew them into perspective if they're not directly facing the viewer. This has a lot of potential and I'd love to see something great come of it!
