I finished trimming and smoothing the edge of the port glare shield, then started on the Dynon GPS mount at the junction between the left and right glare shields. I put additional heatshrink on the wires, fed them through a grommet and slotted the instument panel to slide around it.
Later, I'll trace a large piece of cardboard under the antennas and windshield to use as a template for the dash carpet. The sheet edging will effectively hide the nutplates holding the antenna in place.