Trust me, there is no shame in “failing” the first attempt and trying again when designing your own project. Use the first attempt as a guide. Keep adding details and improving as you go.
Look at these kittens for example. I know they are no masterpiece but they turned out to be just as cute and quirky as I imagined them to be.
I kept on slightly adjusting the pattern with every new attempt. Changed the size, shape and toy stuffing amount I used to make the kittens look better. Stitched the pieces together in different ways and different positions. I even kept on trying different yarn types and changed crochet hook sizes until I was satisfied with the end result.