Editing in the puzzle

I want the puzzle pieces to be very subtle in my images, so I've decided to use one of the photos I took of the vegetable garden I constructed, but before the shoes were photographed, so just of the foliage. I found a puzzle template on the internet to make my photo into a puzzle, then I photoshopped the pieces onto the edited images.

Moving puzzle piece into position and resizing

Duplicating layer

Filling in duplicated layer all black

Adding gaussian blur

Changing opacity

Putting behind original layer and moving around until it looks right