Egypt map homework

In my school we get homework once a week, every week. But we also get something called Monthly Homework. These are more creative tasks and so we get the whole month to plan and do it. I thought you might like to see what things I have been working on.
Here is something that I created when we were studying Ancient Egypt. It is a 3D map of river Nile, actually just the delta of Nile – where the river spreads out and drains into the Mediterranean Sea. I guess you can figure out that the orange is dry sandy land, blue is water and green is the fertile agricultural land. I first created pyramids from think paper and glued them to cardboard. To create the 3D surface, I soaked tissue in liquid glue, squashed it and placed it on the cardboard as well. The whole thing was drying for at least 2 days, after which I was able to paint it. I wish sand dunes were bigger but I doubt the glue would have ever dried if there were any more tissues.

Egypt map
River Nile map