Top notch, Andy, top notch. Love it! I also think your choice of colors works very well. And it's a 109, so it gets my vote right there.
To give credit where it's due, I learned that pastel technique from Bruce Squair, IPMS Edmonton. His finishes are exclusively pastel powder, and he was getting results 20 years ago that we're seeing from airbrushing today: the whole 'dual diffusion' and 'preshading' effects and such. In fact, a lot of those guys were ahead of their time. Thanks to them I was washing, pre- and post-shading in the late 90s, before the internet explosion, and the IPMS Edmonton guys had been using these techniques for a long time prior to that. I still think the armor guys were way ahead, though.
What's this about a September Military Modelers' Show (glances at calendar and rubs hands with glee)?