Darren Latham from \'eavy metal (he\'s on here registered as Razza) gave us a great tip on the diamond patterns when he painted his.
Start with a central area on the bit you want to paint the diamonds on and paint your first diamond by itself. Then do the one above it, then the one below, and keep going till you have a line of diamonds.
When this is done, using the same colour paint another line of diamonds next to the one just done. This will leave a gap between your two diamond lines which will be the bit you fill in with another colour to make the checkered diamond pattern.
I didn\'t use this method when I painted my death jester, I painted a grid first and ti was really difficult to do!