Cut rectangles of colored art or construction paper. For thin paper, mount it to a card cut from heavier paper -- apply a thin layer of spray mount (available in crafts stores); press papers together until dry.

Choose a small, flat evergreen branch. (Arborvitae is naturally flat; spruce or another fuller type will need to be pressed first -- place branch between heavy books, and leave in a dry place for about a week.) Spray a thin layer of spray mount onto branch to serve as a temporary adhesive, then press it onto paper. Cover entire card surface with white spray paint, pull branch off, and let paint dry.

For a glittery card, realign branch; apply spray mount to entire card surface, then sprinkle with glitter. To add "berries" or a written greeting, make fine details with a fine-tip glue applicator, and sprinkle with glitter. Let dry completely.