Fold the top portion down to create a fold about 2 1/2 to 3 inches from the top.
Trace the bottom of a round object onto the top, backside (the portion you just folded down). See below.
You can use stencils, the bottom of a cup or anything round.
With a Sharpie or other permanent marker, write a "To:" and "From:" at the bottom of the card. Simply place the cut circle over the top of any bottle you wish to give as a gift. It doesn't have to be wine. It could be a 2-liter of someone's favorite pop, mineral water, mixed homemade herbed oils, homemade syrup - anything in a bottle.
Write the person's name onto the gift card when you are ready to give you gift. You can make several of these cards ahead of time, and you do not have to limit this project to Christmas cards. You can make these from any type of card. Recycle "get well" cards and place them on a bottle of 7-Up. Get the idea? Have fun and recycle and reuse!