Press space to temporarily shrink. Arrow keys to move, avoid red. And remember just don't lose! If you hit the green lines, you become temporarily small. (I once got 58, before I lost some points) (CAUTION: You may have to keep clicking the green flag, until points are at zero.)
If you get to 50 you win, (I know, hard right?) If you get to -150 you lose. Every 16 points, you get smaller, your welcome! Don't forget to smile (Please don't hate, I worked hard on this.) btw, I know that there are some points that don't get hit with red for a while, so don't write that in the comments.