This is concept only not the map creation. We need to think about a scenario and create a map that depict it. In a list forum generate all asset we will need too accommodate this so we can get a list of agenda created for 3d/2d artist.
This is for level design only not Units or Structures.
You will need to provide example of all assets as an image loaded into the text editor not as an asset to the agenda. These images should flow with the map a tiger / bears in the desert is not realistic. So keep it real.
This level should have a well illustrated theme too it and should be include in the task of what you picked with images for proof of concept.