Tips for preserving fall leaves include choosing flat leaves, avoiding bumpy or spotted leaves, and preserving leaves in different stages of changing colors. Choose leaves that are relatively flat and thin, not curled ones. The leaves should have low moisture because drier leaves press well.
Sandwich leaves between newspapers, and to prevent them from curling, cover them with a heavy weight. Soaking the leaves in diluted fabric softener or coating the surface with a thin layer of petroleum jelly before pressing them results in more supple leaves. Instead of drying the leaves between sheets of paper, preserve them by placing them between two sheets of wax paper and pressing them with an iron, microwave them for 30 seconds, or soak them in a solution of water and glycerin for several days before allowing them to air dry.