One year, when I was a kid, I asked my Mam to make me a Birthday Cake shaped like a Butterfly and made out of Ice Cream. Mam made me that Dream Cake and the memory has survived all this time eventually taking its form in the shape of a rectangle patch.
The design is printed on a high-shine vegan friendly silk and it has been overlocked to prevent fraying.
You canattach to a jacket or backpack (or whatever you like!) by hand~stitch, machine or using a heat-activated bonding fabric.