at first i thought the plates along its chest/abdomen were its back, and the dragon neck was turned the wrong way. maybe the top plate wouldnt have a spike at the top of it? it'll only end up stabbing into the dragon. the way the plates are aranged it looks like it could only curl back, and not forword. I hope that made sense?
i just realized it had arms. to me they look more like crab legs.
good start, like "the swift" said, render it!