Crumple the paper gently, then flatten it out
Tear or roughen the edges slightly
Brush on diluted tea or coffee
Dab excess liquid with a paper towel
Let the paper dry completely
Repeat staining for a darker aged look
Lightly bake or air-dry the paper
Fold and crease the paper in a few places
Rub the surface with a dry sponge or cloth
Smudge the edges with charcoal or brown ink
Add small spots or stains with a brush
Keep the paper away from moisture after aging