OK so I got a 1/2" piece of pine plywood, cut a 16.5" center grip buckler blank out of it, edged it in 1/2" hemp rope, and have faced it in canvass glued down with wood glue.
The handle was cut out of the remainder wood, has been coated in linseed oil.
I put down some watered down wood glue as psuedo-gesso and then painted it.
I will be edging it in light leather or rawhide.
Before the leather edging or boss & handle mounting I will be painting my arms on it.
I cut out & dished the boss myself from 16ga steel.
-Ivan