I don't have any pictures as I wanted to wait until they are properly displayed (and curved) in the exhibition before taking any photographs as they don't look half as good flat!! But here is a picture of the screws that affix the piece of work to the hidden brackets, post-glossing (not as exciting I know!):
This is the best way I have found of holding screws in place (up-right!) whilst glossing them, and it works a treat!
I will post photographs of the pieces in the exhibition once I have visited! Watch this space!