anyone found an easier way to make?

Honestly for me, I don't sew the two pieces of fabric together. Meaning, there's two pieces of fabric - one cotton/flannel and the other fleece (which is for the inside while the cotton/flannel print is for the outside). So I sew up the three sides of the cotton print, leaving one opening (the short-end) open and not closed. But for the cotton/flannel print, I turn the fabric out so the backside is facing me when I'm doing the sewing. I do the same for the fleece print but instead of having the backside facing me, the front is this time. Sew all three sides for the fleece leaving one opening (usually the part where the piggie will go in lol). And then I slip the fleece into the cotton print (I turn the cotton print inside out so the stitches are on the inside now and the stitches for the fleece are on the outside), and sew the two pieces together on the open-end part. I sew the two pieces around so there is still an opening.

To make it short, I got my inspiration from here:
Cozy by LilyGrace