Press the green flag (of course) then press the space button to start the game. Press D to breathe fire, though the enemy is immune to fire except after his first attack. When his attack is finished he will glide near you, so that is your chance to light him on fire. Use the up and down arrow keys to move and dodge attacks.
It took me about a week to complete this program and it came from no inspiration, just an idea. I got the idea by going onto the costume of the cat and fiddling around with the arms and legs. Then I thought 'a dragon' so now it is designed to fly. Try F-B F Kitty 2! (Fire-breathing Flying Kitty).