Press the green flag to start, the up arrow to make the sprite bigger, the down arrow to make the sprite smaller, and the left/right arrows to rotate it. Press the space bar to clear everything. Also, here's a guide to the costumes. 0=CAT 1=BALL 2=CHEESY PUFFS 3=FLOWER 4=RAINBOW 5=SCRATCH LOGO 6=TACO 7=CRAB 8=GOBO THE SPRITE-MAN 9=APPLE Also, press the Q key to change the color of the backdrop.