Sue Duffy of Sue Duffy Designs has posted an article about her Fabric shells and beach inspired quilts.
Have a look…http://ratherbequilting.wordpress.com/artyfacts/three-dimensional-fabric-shells-and-leaves/

Sue Duffy Designs Beach Quilt with Fabric Shells and Leaves

These Shells and Leaves can be purchased through 2 Sew on Etsy.

https://www.etsy.com/au/people/2SewTextiles