Hi Debbie
I am also a teddy-bear lady!!! My husband and I have been giving each other bears and other stuffed critters for years. Anyway, the clam shell is really quite easy if you get a good template. This is a handmade quilt usually. You baste the rounded edge and place them (starting at the top edge of your muslin). Pinning each as you go, drop to the next row and place the shells on top of the circular portion of each shell in the previous row. I usually pin the whole blanket (if a crib or smaller) and sew from the bottom up. When you have completed sewing them in place, you pull the basting and the little clams puff up. I will post one of my shell quilts for you to see. They are really easy once you get the hang of it and they are very mobile. You can take them with you and baste while you wait (say at the doctor's). Thank you for your vote of confidence. Debbie another teddy bear lady!