Iced the cake with buttercream, smoothed with a paper towel with a pattern to resemble snowflakes, then built up the icing for the actual snow man. outlined him with black buttercream through a small tip, then added a nose with tip #8. Scarf with tips #5 and #47. Pressed sugar crystal/sprinkles into the snowman, then dusted with disco dust. Finished with shell borders piped with tip #8 to look like snowbals.