Nice and harmonious whole, great color selection. I think the dragon lacks the final highlights. The head looks great, but the rest of the body could use some additional definition. The stone on the base looks good.
The blue dragon flesh is good, the jewel armour (?) might use a bit of highlighting just to make them spark up a little more. Great use of gloss and matt varnish to represent different materials. I like the rock base.
Dragon is excellent! The rider could benefit from a few more highlights, but the cleanliness of the paintjob is top notch. I definately wish I could paint as neatly as you.
Excellent work on the dragon. Only thing I would criticise would be the horns. Lacking that little bit of brown on the edge like on the teeth and claws. Love everything else on it though =D