Christmas Mickey Gingerbread Sugar Cookies

2hr · 10 servings - 1 refrigerated sugar cookie mix - Mickey Mouse shaped cookie cutter - 3 Egg whites - 1tsp vanilla extract - 4 Cups of Powdered sugar - 1 tsp water - Food Coloring (Brown, white, red, green, and black) - Wilton #5 tip - 5 Piping bags - OPTIONAL (You can buy premade royal icing instead of making your own)