Along with that I would also model the arms in a resting position because I highly doubt that it will walk around like that. (It would look rather odd). Then you will just need to model the circles onto it's back (unless you decide to just texture them on), and that bad boy is ready to have it's texture put on.
And also one more thing. As you can see in this picture here, the head does not perfectly sit on his body and it has a sort of point in the back. I would highly recommend going onto YouTube to see it's model in Pokemon Colosseum, XD, or Battle Revolution. Either that or watch Destiny Deoxys on YouTube.
I apologize for the rather harsh feedback this time around.
Keep up the great work as always!! I have noticed much improved modeling! Well done!!
Take care!!