Step 4: Horn Mounts
Now Make two tiara shaped pieces of cardboard, break the backing, form it into a circle and tape the ends together. Make sure that the horns can fit into these beforehand! if you cant determine that, come back to this step after you make the horns.
Now hot glue both of them to the upper sides of the dome, make sure they're level and strait, i recommend gluing them on with a little bit of glue (so you can pull it of easily if you mess up) until they're alined strait, then add more.