(Side note- While looking at shield designs, I came across this:http://www.securityprousa.com/peprpomoshfo.html. To me, it looks ridiculous; it looks so clumsy and high profile. Where would you even use that thing?! A regular shield would do fine.)
Here's a sketch:

I used 1/2" plywood.

Porthole was cut with a jigsaw, pilot hole made with 1/4" drill bit.

Sanded to perfection with 60grit.

Tomorrow I'll be going to Home Depot for a sheet of Lexan, preferably, if none is available I think 2 sheets of Plexiglas shall suffice. (IMPACT TESTS TO FOLLOW!)
I will also paint it a flat black. More pics to come...