Yep Nathan, it happens all the time here tying streamers. When I tie one that I don't think is good, or feathers laying just right or head not to my liking, I hang it on a special line where I put my streamers to dry and that rear line is for my fishing pleasure.
When I meet a fisherman on the stream, I have a clear plastic box just loaded with streamers and I give them away, I catch fish with my mistakes and hand them out all the time. There is nothing wrong with them, just not what I will hang on a card and sell.
Heck I have customers that will scrape the paint off, they like them like that I guess. So yep!! Mistakes catch fish, even us fur and feather guys.