Do you have a "How to" thread somewhere on this site with how to do this? I have a few questions as to how you got the stands to attach to the styrene, so I thought if you had a thread, it might answer my questions.
I made a rough one today at work just to show my method.
As i was wanting a MOS one, i chose that shape, but it would work for any shaped base.
Make the base, mark the hole to be cut, drill a couple of holes, then dremel 90% away, and chisel to refine the shape.
When the peg fits, paint your base.