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I'm looking for advice on how to improve my map making. I use only a keyboard, mouse, and GIMP; and these maps are representative of the best I can do with these tools and what I've learned so far. It's supposed to show a small farm house and a few recently tilled fields of crops, with a footpath leading into the woods to the northwest. I haven't added any details like trees or furnishings inside the house.

I feel like the maps are 'good enough' to represent the area for my players but I'm not entirely happy with them and I feel like they could look much better. How would you improve these maps to make them look more realistic, or to better represent the scene they're supposed to portray?