Good sequence. Nice animation. The only possible thing I can see that you may want to adjust is the right "hand" of the dragon (in foreground). Towards the end of the sequence, when it roars a second time, the hand seems to come up and open before sweeping back. This is very static and doesn't seem to flow. Try moving the hand up still open, then close into a fist, and come down again. If you keep that within the second roar sequence, it may help. Look foward to seeing the completed sequence. How long did this one take you?