Wow! Really good! Personally, I sometimes use Sketchup to get a good grasp of perspective... although I tend to get bogged down in the details and waste a lot of time on the 3D before drawing on top of it. In any case, as far as your map is concerned, you've really succeeded in making the transition from 3D to drawing! Well done!
Thanks too for introducing me to tinkercad, which I'd never heard of before!