I think you've done a pretty good job :)

All this wonderful creativity! :D

Tricky.

I don't suppose there are any vehicle plans that are definitely in the public domain that you could trace?

Or if you had a model that you could photograph from above, you could trace the photo without worrying about copyright.

Oh yes - that definitely works! :D

I like it :)

But I am wondering why there is so much water at the bottom.

What are your export settings?

These are my settings - for a good quality hi res general export. Notice that I have quite a lot of antialiasing, which can smooth out the jagged edges of things quite nicely.

You get to them by clicking the Options button in the save as dialog, once you have picked your bitmap file type.

Looking good :)

There are connecting wall and hedge symbols if you want to divide those fields and add a bit more detail?

That's a great start :)

Any plans to label the places or add a scale and/or compass?

It's coming along really well! :D

Thank you :)

That's the cobble used as a wall, and one of the two stone textures used as a floor mask.