[Vega001]

My biggest recommendation is an increase in grass detail. Suggestions include bush stumps, cut grass, flowers, stones leading up to the house, and miscellaneous 1x1 grass detail tiles.

I agree with Crono's comments on your dirt detail.

I would also suggest shrinking parts of the mid-depth water in favor of shallow water tiles. This will enable you to detail the water more with shallow water detail tiles and make the water seem more natural as the depth increases towards the center (rather than dramatically dropping down right off the shore).