Download templates for the reindeer's antlers, head/body and the pop-up card base. Print out a brown head and two legs, silver or bone-colored antlers, and ball ornaments on any color of medium-weight paper. Use a knitting needle or bone folder to score the dotted lines of the head and body.
Cut out head, legs, antlers, and ornaments with utility knife. Fold head, antlers, and body along score lines. Score card down middle where fold will be.
Glue down the tabs of the antlers with white glue to the shaded area on card that says antlers. Glue down head tab to create 3-D head. Next, glue down head, body, and legs.
Glue together two small circles with a piece of silver thread sandwiched in between to make a mini ornament. Make a hole with a mini hole-punch on antlers; tie on ornament. Embellish reindeer as desired. Place in 5-by-7-inch envelope.