It looks great! It’s got that traditional lowpoly style prominent in a lot of the older Roblox games from the 2010s. You could easily lower the poly count a lot on the tree trunk / windmill cylinders & spherical tree bushes, and it wouldn’t affect the look since they are so small.
I think the wind turbines look a little out of place near some ponds/rivers. However, I think you did a great job. and i wonder what kind of abomination we would get if autosmooth was turned on…