Hi Charlie Eve you are an absolute expert at working with textures and a graphical style.
I have come back to this post a few times now and the one thing I could offer is perhaps there is just a little bit too much texture/busyness going on in that top half of this Snow Happen cover. Like maybe the tree's could have less texture here? So that they would give our eyes a little bit of a break? Because with the snow splatter, and everything else going on, I lose the title a bit and my mind wants something to be able to rest on and that might be a place to do it? Like I said you are the pro at this so you might have a better solution but just a thought for you to consider.
I remember the portfolio pieces you had created for this story a while back when you shared them here, and they have stuck with me all this time. They were so wonderful. So I can not tell you how happy I am that you are turning it into a dummy and moving forward with the story, concept and style. I know it will be a real winner when you are done. Can't wait to see where it takes you!