-- and when they say start from scratch, they don't mean abandon this project/thread and to pick another one - they mean to stay in this thread, stay focused on a cat, grab a reference (such as the two provided, or use a real life photo of a cat instead), work on that and see what you learn and show us, THEN see how you can re-imagine this existing 'crazy cat'.
Do it and it's rather likely you will wind up very happy with yourself.