This was my first attempt at a major SFX-makeup-involved costume. This was my Tzimisce Delta from a Vampire: the Masquerade Sabbat LARP I attended. I had a pretty low budget and didn't have propper work space, but I'm happy with how it turned out anyway. You can see my first painting of Delta in the background in some of the progress photos.
Note: While in the instructions say to add a snap to the horns, this is something I did for my Dolorosa cosplay years prior. What I actually did for this LARP (because it can get physical if you opt-in) was epoxy glue pieces of black fabric to the horns and sew them through the wig to the elastic with invisible thread on the day of the LARP. This method will make them STAY but will also make it so you can't easily get them off until it's time to clean up for the day.
I also kept my hair long so I could lock the elastic inside ponytails under the wig for extra security.
I added a piece of wire into the back ends of the side braid pieces so they could loop into the wig brace.
The eyes moved as my head moved. They were probably my favorite part.