The design for the low polygon fox head mask came from @wintercroft Website. I laser cut the mask out of coroplast and glued a soft backing on the inside. The insprided to cover the face of the mask with LEDs came from @Wow_elec_tron. He makes some of the most amazing LED masks that I have ever seen. His masks can be purchased from his Etsy store ElecDashTron.
Project source code files can be found in this github project HalloweenMask. Note the design files for the low polygon fox head mask are not open source.
In this photo I am laying out where the LEDs go and how to connect them to each other.
In this photo I am gluing the LED strip to the face of the mask then soldering them together with small bits of wire. As @wow_elec_tron suggested, using IDE cables instead of individual wires. It speeded the proccess up a lot.