I was captivated by a watercolor painting by artist Jerry Stitt showing a cabin by the edge of a bay. I painted a copy, and then I made a second version with changes to make it my own. I reversed the image left to right and changed the background.
I was happy with the foggy mountaintop in the color version. You get this affect by painting the background clouds, then waiting until just the right moment to add the trees on the ridgetop. If you time it right, the edge of the ridge melts into the clouds, giving the appearance of a rainy mountain day. If you add the ridge too soon, it just dissolves in the clouds. If you wait too long (as I did in the black and white painting), it becomes a hard edge.