After assembling, priming and painting I used a piece of acetate to make the full commander's turret shield. This part had to stay to the end as I wanted the small rectangular visor to show its glass. Green and brown (to simulate the cloth around the bottom part of the shield) was painted around the small rectangular visor.
The turret Mg's are metal Skytrex.
Some seams from the 3D printer can be seen but in some places they even add to the detail!