At first my plan was to make a clay model then cast it in silicon then concrete for his driveway but I got to such a detail level that I wasn't certain the cast would take so I have given it a bronze like finish.
When I have the time I will make one each for my mum and dad in concrete to put at the end of the driveway!
This is my first instructable so if you have any questions/critisims then let me know.
Step 1: Image Study
The green lines are the features that need to be just right and the red lines are all the bumps that make my dads face HIS face. :-)