to change scratch cat: e for extras ear parts, a for arm, l for legs, h for head, t for tail, b for body, f for face, n for bowties, s for hats, r for reset, g for floor, you can also drag his arms, legs, head, tail, face and any thing else [except backdrop] if you press up arrow and if you don't want to drag then you can press down arrow if you already pressed up arrow. and press space to change backdrop