It’s a good idea to pack all pictures and mirrors prior to your move. This gives an added layer of protection to these fragile items. There are a few custom-made packing materials on the market but the following is a good example
Step 1: Wrap your picture in 2 or 3 layers of decent quality bubble wrap
Step 2: Tape the bubble wrap securely around the picture
Step 3: Find a flat box that is larger than the picture
Step 4: Seal the box along one edge to create a sleeve
Step 5: Slide the picture into the open end of the box
Step 6: Seal the other end of the box sleeve