I've used Lawn Fawn Large Slimline Dies with Sliders to create my card bases.  The first base was die cut from Bazzill Jawbreaker Cardstock and a smaller piece was die cut from Bazzill Marshmallow Cardstock.

The snowflakes, from Poppy Stamp Die - Crystal Ornaments Craft Die, was also die cut from Bazzill Marshmallow Cardstock.

 Rudi, a Prima Marketing - Julie Nutting stamp, is a perfect sized stamp for slimline cards.  I stamped the elements with Lawn Fawn Black Licorice Ink, heat set, colored each with Copic Markers and then die cut with the included dies.

I inked the edges of each stamped piece before adding them to the card.

I spritzed the panel of the second card with one of the colors from Lindy's Stamp Gange - Neon Graffiti - Sidewalk Chalk - to simulate snow, then also die cut it with Lawn Fawn Large Slimline Die with Sliders.

The snowflake die was added to the cards, then Rudi and the North Pole sign were added to the cards with foam adhesives for dimension.