These are instructions for thehappytroll to implement this map. You can read if you're not him, but it probably won't help you unless you plan to add this yourself. First of all, you might notice the foreground objects. You don't HAVE to add these, but I feel they make the map look a LOT better, so it would be preferred that you added them. To add them, you will likely have to make them appearing be dependent on what map is currently selected. A value that changes every time you switch maps and resets to 1 once it hits one past the amount of maps in the game could help with this, as you could then link the script "If mapValue = (# of this map) Then: Show. Else: Hide." up to a flag-activated "Forever" loop. Now, for the stage and background. Literally just put them into the stage and background objects like you have for every other map. I don't even think I needed to tell you that, because you've done it already.
Thanks to thehappytroll for making this amazing game. All art assets (except for the stage and background templates these were built off of) were created by me.