Hi Seansun, Welcome to the craft. You have the bedazzle - bling spot on, nicely done. From what I can see from the pic's you need to burnish the edges. Just take a wool dauber, or sponge, dampened with water, and apply it to the edge of the collar. You only need enough water applied to matt down the fibers. Then if you have an edge slicker or burnisher, in a back and forth motion cause friction or heat build-up along the edge. This will give you a finished smooth edge. When you are finished you shouldn't have any "flake off". I don't know what in the way of tools you have but you also can use the wood handle of most hand tools until you can get the proper burnisher. You have the artistic eye and you should be proud of those collars, I know your dogs will be.