Imported both files into lightburn and resized them to 5x7. I also made a cut line to put around the first photo (front) and made it 5.25x7.25. I centered the first photo with the cut line and hid the second photo (back) so it would not engrave with the first photo.

I then secured the wood (3mm basswood plywood) to honeycomb with tape so it wouldn't move. Hitting the frame button, I aligned it to the sheet of wood. Once I aligned the frame, I engraved and cut the first photo.

Once finished I pulled the cut piece out without moving the sheet of wood and flipped it and placed it back into the freshly cut spot in the sheet of wood. I then went into lightburn and hid the first photo replaced it with the second photo and then hid the cut line so it would not cut a second line. I then hit frame to make sure my wood was aligned up and then hit start. Make sure when you flip your piece of wood that you have the engraved side facing the right way.