The pattern is free and called unique blanket by Yolanda Soto Lopez on ravelry. Photo doesn't bring you to pattern. Search it on ravelry.( as per some comments this pattern is no longer free). If anyone does have a link or the pattern please do share.
This is a felt brooch that I have individually designed and hand crafted - it measures in diameter. I have made this brooch from fifteen pieces of co-ordinating felt. Using silk cotton, I have hand embroidered this item using a freeform technique.
Crochet - Granny Spike Stitch - leaves fewer gaps, because the second double crochet is crochet through the top of the second double crochet of the row below. Possibly use a dc,tc, dc pattern in the clusters? From Do It Darling.