Less is better
I've been trying to loosen up for years......to get away from small details that are unecessary. Working on the theory (Chinese I think) that "less is better" I used a large brush and kept things pretty simple. I used Winsor Newton transparent paints so that I could wipe out if necessary.
I did wet the top part of the painting so that the colours would flow into each other and have soft edges.Wiped out where I wanted to put the tree trunks and when dry added the tree trunks. The paper is 140 cold press. I don't think it took an hour.......and it sold!!! Really!!