How to Sew a flat piece onto a round piece in crochet
Crochet is a wonderfully versatile craft that allows you to create a wide range of items, from cozy blankets to stylish hats and everything in between. One of the challenges of working with crochet is figuring out how to sew a flat piece onto a round piece, such as when you're making a stuffed animal. This can seem daunting at first, but with a few simple techniques and some practice, you'll be able to seamlessly attach flat pieces to round ones in no time. In this tutorial, we'll walk you through the steps to achieve this.
Sewing a flat piece onto a round piece (step-by-step with photos)
 1. Invisible fasten off the flat piece (Piece A). Hold Piece A on top of the other piece (Piece B), with the “right side” visible. |  2. Thread a needle with Piece A’s yarn tail from the invisible fasten off. Insert the needle into Piece B right under the point where the yarn tail came out from. Pull it out of Piece B one stitch over, following the edge of the Piece A. Pull the yarn tight after every step. |
TIP
Use pins to hold Piece A in place as you sew it on.
 3. Insert the needle under the top loops of Piece A from the bottom up, directly above where it came out of Piece B. |  4. Insert the needle under the top loops of the next stitch of Piece A from the top down. |
 5. Insert the needle into Piece B, directly below where it came out of Piece A. Pull it out of Piece B one stitch over, following the edge of Piece A. |  6. Repeat steps 3–5 until all of Piece A is sewn onto Piece B. To finish, hide the yarn tail in the piece. |