Not bad :D
Some comments:
The feet look like hooves, really - a bit more detail would\'ve been nice there since not even a good texture will make \"claws\" totally believable with that mesh ;) The rear legs mirror the front legs too much, in terms of shape and bend. Mostly bend - it\'s a very odd structure. I\'d suggest studying anatomies of quadruped predators such as wolves, felines, etc. I think your current structure would be more believable if the feet were much shorter, keeping the body just slightly above ground - alligator-like.
Keep in mind that dragons, traditionally, have an enormous lung capacity, so their chest cavities will be much bigger - that is, after all, where the wings attach. Speaking of which, their current attachment at the shoulders only makes flight not an option, unless magic-propelled. Such wings will never have enough strength to lift the mass of the creature beneath them above ground. Continuing the attachment of the wings to end at the croup (rump) or tail would be much more \"realistic\" ;)
Regardless, for a first creature design this is quite good!
