when the arrow gets to the other arrow touch w if the up arrow gets to the other arrow touch d if the left arrow gets to the other left arrow touch a if the right arrow gets to the otehr right arrow touch s if the down arrow get to the other down arrow. you want to change it? go to the play screen and touch space and change it but you are responsible to get use to it. how to get to the play screen? touch green flag and i'll take you there
if you want to give more feedback to my 2 other peak animations here are there to links https://scratch.mit.edu/projects/1308579525/ and https://scratch.mit.edu/projects/1308513718/