Played around with my camera’s settings and figured out how to set the white balance. Should at least improve color reproduction somewhat, as I don’t have to run white balance in GIMP which is only as good as the white in the photo (or grey, as it were).
Also tried pulling back the lights a bit and adding a couple more layers of tissue paper as a diffuser to reduce the hotspot reflections. At this point, short of hitting it with a matte varnish before photos, I think I’ve got it more or less dialed in. We’ll see when I finish this guy and hit it with the varnish. Here’s the sample shot: