listen to the video, and you will know what to do (by the way, I might not make any more ep anymore)
This is ep 4 ep1 https://scratch.mit.edu/projects/1197412623 ep2: https://scratch.mit.edu/projects/1201954135 ep3: https://scratch.mit.edu/projects/1203611856 ep4: https://scratch.mit.edu/projects/1211964461