For the face mask, roll a long snake of modeling chocolate. Cut this snake to length and form the face mask on a circular container that is as wide as the face opening on the helmet. Put in the freezer until firm.
Almost done. The last thing to do is brush the blue and orange portions of the cake with vodka to bring out the vibrant color, and paint the "War Eagle" on the back of the helmet with a mixture of vodka and black food coloring.