That is an amazing piece of work Derek!
The details and colour are superb, and your textures could't be more natural. The feeling of cold and warm sunlight come through vividly. Be proud!
Somewhere in another thread you said (if my memory serves me well) that it took you about 16 hours. My! I have never done a sustained CP in less than 30.
You also recommended the Golden pastel ground along the line.
The first CP box I ever bought was Prismacolor, the second Polychromos, which I am sad to say is still intact, except for the skin "yummy" colours, the Dark Green and the Black. I don't use black in general, but I find the Black lays down beautifully and feels creamy. It worked very well to intensify background colour on dark blue CMT...
With your experience with Polys, would you know why it doesn't stay on my paper, which is not sanded, but toothy? I thought of making a tool (its name escapes me) painters use, a piece of wood that "floats", and therefore it doesn't touch the paper. Otherwise I use a sheet of acetate to protect the work done, but somehow the pigment disappears in front of my eyes. I'd really appreciate any advise you could have.