Improve Actor's JUMP?

GSExtreme

I made an attribute so that the actor jumps 3 times while in air and after the attribute number is more than 3 the character moves down...until he collides with the ground...also if the user continues pressing the space the character continues to go up, and if he gets out of the screen the actor is dead.

GSExtreme

I was going to add some special effect like dust when he jumps off the ground

GSExtreme

Is the jump ok?