Thanks everyone! I would estimate that the total time was probably about 10 hours from start to finish. Having sourced the original skull really helped out keep it as accurate as possible. I was able to draw out much of the lines pretty close to the original using the natural topography of the skull. The wash was initially a bit of a screw up. I started using a MIG brown wash, but that stuff is CRAP. It started eating up the paint already on the skull so I had to quickly and carefully strip it off using a little acetone, then scrubbed and washed the skull with water before re-primering. Then I stuck with several different dilultions of Red Brown Tamiya paint. Starting with the thickest paint mix to paint the inside of the skull and the lines, then with a few different lighter mixes to bring out the rest of the details. Lastly, teeth with a little yellow clear Tamiya paint before the wire wrapping.