What really helped me when editing together non-narrative collages, was trying to keep the movement flowing shot-to-shot in regards to direction, gently changing it, not suddenly cutting to movement in a completely different direction. This can be copter movement but also movement within the frame, e.g. Cars, people etc. It helps to create a feeling of purpose to shots that don't really tell a specific story.
I'm no expert either, but, your exposure and framing is nice. If you're a single operator you might want to look at grabbing Autopilot. The focus strategies can really help to create dynamic movements that you'd need a cam op for usually. You'll be able to vary it a bit more, rather than just the standard strafes, push in/pull outs, etc. Basically, you fly and the app points the camera at a specific focus point.
