You can see my house inverted in this raindrop
Raindrop
the eff stop
Adventures of a shutterbug
the eff stop 
I havent perfected it either – but I did this with a tripod and a 40 year old manual lens. I have some ideas about how to make it work now that I have a really good macro lens in my kit.
wonderful shot, I keep trying these, but as yet haven’t been successful 😦
Still practice makes perfect… eventually, I hope!