training to slay a dragon

this is a humorous scene to show that a master is training his young knight student to kill a huge dragon in the training-place, but the boy is afriad to be hurted by the monster,so once he hit the dragon he release his sword that was sting into the mouth of the poor training-dragon.
maybe it is funny when u see my painting.
with painter and ps in final color-adjust.

the work is collected by book <ainter> and as a master piece by cgtalk.com