My advice would be.... pick up a tablet and paint a dragon!!
Show us what you can do in the sketches/WIP thread and we will help you! This community is very helpful and has a wide range of abilities and aproaches, so be prepared to listen to the advice and you will quickly see the improvement.
The best advice for anyone who wishes to improve in their art is to practice. Draw and paint (digitaly if you wish!) regularly and as often as possible. Post up your sketches and your Works In Progress and go from there.
It's not about volume, it's about value!