Painting in Skagit

I rode and headed north in the afternoon and started painting in Skagit valley looking toward Glacier Peak at 6PM. When I finished this Sun was still above horizon. I had problem with drowing at the beginning but managed to finish it. It's been two month since I did plein air last time in NoCal. Still can't get the formula mixing greens to get the sense of distance. Today I tried adding viridian but didn't work as I hoped.