Cutting DModelPanel to fit circle

Hey, I’m trying to wonder how I’d be able to cut the DModelPanel into the circle, so it can fit? :\

Stencils.

you might want to explain to them what stencils are because learning them was a bitch and i still don’t know how to use them

This might help:
https://code.google.com/p/tiramisu-rp/source/browse/trunk/tiramisu/gamemode/schemas/global/plugins/hud/cl_healthhud.lua?spec=svn10&r=10#97