Spoiler Alert: Scroll down to see how it was done...
No photoshop was used. Simply dental floss and gravity. The "strings" remain in hand by use of a modified (read: cut) Ringmaster's whip. When photographed, I simply cropped the photo and flipped it, viola!
Neat trick Dave. Congrats on the perfect score. I love the look of this, the tree construction, the balloons and the Fabuland fig make me think of Maurice Sendak or the Moomins - odd childrens books rule! Good luck Bats.
I see those white support beams... flipping this thing must have been mildly stressful. The balloons look great, and the techniques and part usages make this look like a scene from an old children's cartoon.