very detailed
i think the problem of the grass might be the lack of interesting colors(some hueshift towards yellow or blue would help)y the shad
but it might also be the way the shades are arranged, like blanket shading.
btw i think some more bright colors would liven this up some, atm it looks very dark
the to what i think are water tiles look pretwty uh, bad.
i like the colors of them, there fine, but there are just random marks. of course i havent played harvest moon so these tiles could be something that i dont think they are.
the darkest color in the ground tiles makes them look very grid like, along with highlights that seem to be around the edges too much.
also, about the grass tiles. they seem to use much less shades than some of the tiles around them. which might add to them not looking right and somewhat out of style