If I make the middle-distance outline 30% opaque it will blend in with the mountains. I had subtle outlines on older versions, but some felt they should be darker. I think the outline reduces the realism, but it helps tie the foreground to the middle-ground visually and it anchors the trees. I don't intend to work on this anymore, at least for now. I have other tilesets to make. I'm sure it will never be perfect in everyone's opinions, but it is marked KS use/edit ok, meaning that anyone is allowed to use, modify, or borrow from it for Knytt Stories without further permission.