After pressing the green flag, press the space bar and use the mouse to interact with the cat.
This was such a fun project to make! I'm really enjoying continuing to work with the vector editor! At first I had the curled-up cat and close-up cat within the same sprite (as many costumes). In order to make use of the "next costume" block, I decided to separate them out to separate sprites. Working on fixing a bug that causes the two to overlap during some of the transitions.