Feels done.

Changes and decisions since the first draft: I changed the perspective from very birds's-eye to more of an elevational axonometric - so that I can better demonstrate architecture and design instead of trying to impress the eye with perspectival tricks. The same reasoning goes behind putting the foreground section very close to the camera to show two scales in the same shot. 

The hot-air balloons in the end really helped demonstrating this scale shift... with one of them up close and all the rest far in the distance.

Not so sure if the 'story' comes out well, but this is essentially about a kid remotely fixing a broken balloon whilst a friend flies over to relay the news (which the protagonist obvisously already knows because - they've got hyper-speed connection... tada.) 

The few trails of smoke on the hot-air balloon and the vehicle also help a bit to tie the composition together and to suggest some sort of movement in guiding the viewer around the picture, hopefully.

Anyway thank you for following, it's been a great imaginative journey. xd