Next I inserted the card inside the shirt, marked around the collar so the card wouldn’t be seen.
Then I removed the card and trimmed where I had marked.
Then simply slipped this back up inside the shirt and positioned it.
I then put it face down and folded the shirt round the back of the card and inserted it into the frame, face down on to the Perspex. Then, I simply put the back of the frame on top of the shirt and closed the 8 fasteners (2 on each side).
Next, just to hold it in place I used some 25mm brown paper framer’s tape to tape the edges to hold in place.