Choose a color palette for your collage and gather your materials.
Tear or cut your vintage paper into various shapes and sizes.
Arrange the pieces on your surface, layering them in a visually pleasing manner. Don't glue them down just yet.
Once you're happy with the layout, use glue or gel medium to adhere the paper pieces to the surface.
Apply acrylic paint or watercolors to add color and depth to your collage. Allow it to dry.
Embellish your collage with vintage stickers or postage stamp stickers.
Seal your finished piece with a layer of gel medium or a clear sealant.