the easiest way to make them would be out of plaster and not buying them from the site. its really hard to build upon a mask into those shapes and have it look natural.
Adelheid (KHR!)- 85% done
Fem!Austrian War Succesion France (Hetalia/Nyotalia)- 10% done
Fem!Izaya (Drrr!)- 90% done
Magent!Teto (Vocaloid)- 95% done