Attaching the frame to the paintings to photograph

My original idea was to use one painting as the final outcome so I had only made one frame. I had to work out how to attach the frame to the other paintings with the capability to interchange them to hang and photograph to give the illusion that they are a diptych.

I attached the paper paintings onto cardboard with double-sided tape to make it solid and trimmed it to fit the frame.

I attached the frame with small bulldog clips and gaffer tape. Measured and marked with blue tack then nailed the painting onto the wall and then attached the frame .

Repeating this process on the pink espresso and macaroon painting to photograph.

Hanging the painting to photograph.

I photographed each of the painting with and without the frame and cropped and edited it them on photoshop so they look like a diptych.