I changed the hook size, the yarn thickness, the measurements, the sleeve joins, the collar, the edgings, the tie and the joining method . I may as well have written a new pattern and just used the stitch effect I was after. It's a new born to 3 month old size. Not such a big item, but it did take a few days to make because of all the changes. Was it worth it? Well you can be the judge of that.