On the off chance you find yourself needing to replace the leaf nose of your owl mask, and there are a lack of leaves due to snow and such, I would suggest you look around the house to see if you have a corn husk doll (most people do, right?) and ask her politely if you might use a bit of her skirt. Corn husk dolls don't speak (not to me anyway), so take her resounding silence as a "yes", cut yourself a leaf shaped husk, get out the glue gun, and begin surgery at your convenience as seen below: