I sewed a mermaid tail blanket for my 3-year-old honorary niece. I had left-over fabric from the “Boo” costume I made her (sorry, no picture of that, she won’t pose for it) and thought she might like a new kind of sleep sack.
First I used fleece and made the main part, 16 inches wide and 35 inches long, tapering down. I cut a matching piece of the scale fabric for the front. Putting right sides together of the 3 layers, I sewed the seam, then turned it right side out. I cut one piece of the tail fin from fleece and one from the scale fabric and sewed them together (same method, right sides together)
I then sewed the fin onto the rest of the tail, tucking under raw edges.. I hand-sewed 4 lines leading from the base of the tail across the fin to make it look more fin-like.
I thought about putting elastic across the top but decided to simply roll the fabric hem to finish the edge instead. (If I put elastic in, I would make that bigger to create a channel to feed elastic through.)
Well, doesn’t everyone?