1. Click the green flag. 2. Wait till the starting thumbnail has disappeared. 3. Click on anything (including the backdrop) to change it. 4. If you want to save it, right click above it and click 'save as'. Anything else below? No Idea! Keep going! How long is this!..... Well you've just wasted your time, nothin' here!
If you want to make something like this check out my tutorial: https://scratch.mit.edu/projects/545609915/
