You can only make 6 frames. When you are done doing the position stuff. You can click the cat to see your animation. Click it now to see your last animation. Or press the spacebar to make a new animation.
We added a thumbnail! Now we're talking! UPDATE: You can click anywhere then it adds a frame and in the animation, the sprite goes where you clicked! Run it here for no lag: https://www.w3schools.com/code/tryit.asp?filename=GO0V4TFO37RG