Hinge for the background picture
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Two-sided adhesive carpeting tape.
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Normal adhesive packing tape sticky side upwards.
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Fold the tape upwards and stick it to itself in order
to make a durable edge.
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Make the other edge the same way.
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Take more 2-sided adhesive carpeting tape.
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Use the light from a window to see where the plate ends.
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Stick the original edge of the 2-sided adhesive carpeting
tape where the plate ends and the edge that you have cut to the
other direction. That way it doesn't matter if you haven't cut
straight.
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Cut away the extra pieces but don't cut the packing tape.
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Peel just a little corner.
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Fit the picture exactly and then stick it to that corner.
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Peel one edge and attach the picture straight to that edge.
Now it's in the right position.
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Finish the edges with the back of your finger nail.
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If the picture doesn't cover the whole adhesive taped area
you can rub off the sticky glue with your finger.
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