Here is a quick small tutorial of how I did my Poro horns:
Step #1: Mold the horns with Magic Mold (You could also use clay or foam)Step #2: Wrap chord or string around the horns and glue them to place
Step #3: Use Gesso and mod pod to smooth the materials together. Layer about 5-10 times, and then apply the paint colour! (Kind of looks like poop XD)
Step #4: Glue it to a head band and you are good to go! (I also used wiring for reinforcement)
I also made cute little Poros really quickly!
Hope that helps anyone who wants a easy way to make mini horns!