The normal “deluxe” way of wrapping/packing pictures and paintings is to wrap it first in a paper pad, and then put it in a four-piece picture box. Putting together four-piece boxes is very time-consuming, but certainly recommended for very high-value pictures and fragile mirrors.

Often a good compromise is to wrap the picture/painting in just a paper pad. It’s easy and the paper pad is clean unlike a quilted pad which has probably been through the “ringer” many times, and may be full of dirt and mud.