The map is pretty nice, but everything looks so simple.
Add some block variation in the paths, and roof houses. To do that, you need world edit and do "//mask [material" and then "//br cyl [materials] [brush size]" —E.g, "//br cyl 20%159:3, 20%159:5, 60%159:6 5" — and then it will give some variation to the roofs, and street...
Maybe add something in the sky... A zeppelin perhaps? or hot-air balloons. Maybe add some custom clouds made of spider webs. Add spider webs on the top of the houses if they have a chimney
Giving it block variations will definitely give a new and better look to the map. add hand-made trees. Give it a nicer look too.