Hi,
DC3 is really engrossing. Below are a couple of quickly made maps.

For this one I added a Water to FLOORs. I also tried out the SHADING transparency found in OBJECTS. Very simple to use, especially as it can be spun round.
Remember to keep the shadow the same as that on the other objects (ie from top left).The small kids pool in the corner is from the supplied OBJECT tiles but on close inspection seems to have a small error in it (an extra circle). Pity. But note as its transparent, if you put one on top of the other you get a darker blue.
One vital thing seems to be that I originally though the RESOLUTION (rolling the mouse rolly button) only changed how you saw it in DC3. It actually also appears to change the size of the exported file. So for my purposes I must remember to roll up to the highest resolution before exporting as I want the highest res possible (I can blow it up again also in Paint).

Here I'm trying three new FLOORS: wood, stucco and water. The rest are straight from DC3. In this one I accidentally learned a lot about shading. I made the bridge narrower but that left the shadows (from the shadow OBJECT) behind. Thus I discovered how to create steps!
Thanks again DC3 team for providing a lot of enjoyment!