listen to the video and you will know what to do
If you want to know, I have a brother @Christianyit_2016 This is episode 1, 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