I think you did a great job for a first attempt! I used a blanket stitch for my first attempt at machine applique because my teacher told me that it was a bit easier to use as you could count when the needle was going to go into the fabric shape and make it a little neater than using the zig zag stitch. I was also told to check where the needle was in the fabric for turning corners so that I got a nice clean result each time. I still think you did an amazing job but I Hope this helps for your next project