Just watched it, I thought it was really good. My "personal" certainly not professional comments would be:
1) Is it just me or does it look a bit under exposed (dark)? I know you were shooting in full sunlight and that can obviously be a bugger, but the general feel seemed subdued to me.
2) The music was "OK". I actually like Enigma, but not sure it was the best choice for the video content, I think I would have used something more upbeat? It looked a really fun day, the music was a bit too 'serious' in my opinion. A tune from Disney maybe?
3) I found some of the shots of what was going on around the event distracted from the work. (Superman on stilts, girl in push chair). The funny shots like the chalky bum and saucers of coloured chalk were all part of the (my perceived) purpose of the video.
4) Just a thought, but it may have been nice to have had some way of telling how much time was passing while we were watching (I think a time clock in the corner of the video would be way too clinical, but a snap shot of the town clock every now and again, or even the shadows cast by the sun throughout the day would have helped to give a feeling of "wow she was at it a long time". Just my 2c worth, I'm interested to see what others thought :-) Good job WaterEngineer!