I remember doing this in 6th grade!
Remember: If you have a rubric follow it ALWAYS. The teacher will be looking at the rubric to grade you.
First, fold the paper into about three sections
Now I would introduce with the landscape of Mesopotamia For example: Wet, floods every year, 2 rivers... etc.
Then, do agriculture (I know this is a very important thing to write about)
do some extra things such as population increase, and stuff like that
Hope this gave you a little head start! ****follow the rubric, its the best thing you can do******