The river is way way to straight. Your ground around the river is way way to straight. All the houses are the same, try making them different. 1 tree in the whole village??? Add more trees. Use more ground variation like grass patches.
Hard to tell but the river looks like it goes down 1 ground level and the bottom house is at the same level as the rest. I think the bottom of the map should go down 1 level to match the river or something like that. Maybe just an area in front of the river should be low to match?
Other than that good start of a map.