That looks great! Did you use the roll batting or cut the strips? I watched this tutorial this morning. She includes a few helpful tips about stitching them. Our local shop is making them with the serger. Fun stuff!
https://www.youtube.com/watch?v=Y8xblarkuBg
Here is the batting for them.
https://www.fatquartershop.com/katah...CABEgLptvD_BwE