Agree with Kurt Russell. It took me a minute to figure out that the pink was sky. That said, I really like your trees.
The bluer and less saturated the colour, the further back in the art piece our eyes will believe it is, cause that's how it is in real life. You kinda did the opposite, so I had to force myself in seeing what you wanted.
I think it's lovely but the pink sky behind the mountains is too dark and reads as pink sludge sliding down the camera lens in the foreground. Horizon atmosphere should generally be brighter than the ground below it.
Tinking of it I dont think I can use this simple style for any commercial work, but it has that simple yet atmospheric feel of great painting. nice