I really think the gameplay could be great on this map. You didn't utilise too much water, yet you added enough + the lilypads should help out with that. There is plenty of flat land while still maintaining a nice terrain. The custom trees are well done.
My only problem with the map is the depth and detailing in the walls. For example, take this image..:
There isn't much detail to the walls, and the palette is a bit strange (just the stained clay). Perhaps some stone bricks, stairs, and fences could really help to add detail to the walls.
Overall, it's nice. I can envision good gameplay on the maps, but I think the buildings need some more detail.