It's a while since I have made one of these punched collages. I don't know why make them more often. They are a lovely gift. This has been given to a colleague on the arrival of a precious baby daughter.
I bought the frame from Tesco and gave it a wash with watered down white acrylic paint.This enables the grain of the wood to show through. It can't be any frame - there has to be a gap between the glass and the base for the punched pieces to sit without being squashed flat.