Phew - finally got there! I had to scan a couple of copies and experiment with scissors. Are we supposed to glue the pieces on to a piece of paper if we are entering? I suppose we must.
In case anyone is misled by posts 29 and 30 (as I was), and although I may be wrong (wouldn't be the first time), one of the diagonals does not begin with the first letter of the hero's name but it does go through a corner of the square it's in.