This was my 1st custom I made a year back. It was mad before the Dark Knight came out, so this is the concept I originally imagined Two Face would look like.
Simple custom (depends on how old you are). I took a MLS9 professor X figure, dippped the right side ("his" left) in kerosene, took my handy-dandy lighter and lit him up. I covered his good side in tin foil so it would keep from burning.
1 year later, a sculted some hair on him, touched up his suit, and finished him up. hope you enjoy.
Resculpted hair and suit. Repainted suit, and burnt face & hands. Now he looks like a cross between Long Halloween Two Face and The Dark Knight Two Face.