|I see some right in the middle that I have misaligned. Oops!|
The teacher in the Judy Niemeyer class I took, told us to glue the convex and concave pieces together. This works out quite well. Here are pictures of what I did.
|Convex and concave pieces|
|Pinning the very edges|
|Laying down a line of glue just to the seam allowance|
|Matching the cut edges|
|And, voila! Stitched together. No creases.|