Use slider at top to change speed. Watch. Enjoy (credit to both mikeono102 and Rawrified, see why below)
This project is actually a remix of this project: http://scratch.mit.edu/projects/12572474/ I remixed it because it lagged horrendously. So I changed it to stamping, and it works great. What maight be confusing is that because the above project broke my browser, I had to remix the original original project ( http://scratch.mit.edu/projects/12558141/ ) which is why it is under that project rather than the remix. I give credit to both mikeono102 and Rawrified