Originally Posted by jisse

Your mods look really cartoonish to me. Maybe it's the colours you're using, or the lack of small detail spread out over the map. Try not to focus so much on one spot. Some of the shape's proportions seem weird as well, the wall under the zipline is really thin for example.
Also, make the baseplate 10000x10000 or something, that will make it look more of an enviorment, rather than a scene.