I've been having a battle with the forest backgrounds and I've always been kinda scared of backgrounds in general with their huge scale and easy to screw up-ness. So I sat down and tried my best to make it look nice and have a fairly consistent style between other worlds. I needa clean them up a bit but I think they're coming along way better, also introducing snow and hell worlds!
The game use to have a large black bar that served as the hud on the bottom of the screen. I removed the weapon icons since they really served no purpose and with that the bar was like 80% blank space. I then removed the bar completely and moved the hud to the top. Now the screen has much more space and I think it looks nicer to boot.