Good start bud... Have a few tips you should look into though.

1) The fire looks really good.

2) The dragon needs to be losen up a lot more he/she is a bit stiff, try adding some a lot more rotation in the body.. Start of with the mid section around the wing area, arc its back up and down as its wings flap.

3) The wings depending on the rig should and will cup more to get lift. If you can watch some bat footage of ther wings it will help.

Good reference of a flying dragon is, Reigion of fire.

Great start

Kurt