Melting chocolate wafers, any kind/colors you'd like - I recommend white chocolate for the Storm Troopers!
Caramel sauce, if homemade, make sure it's cooled to room temperature
Sprinkles or any other desired decorations
Melt chocolate wafers according to the instructions and pour into molds. If you want to decorate faces and other details, just use a toothpick or a small (clean and food safe) paintbrush to color in what you'd like on the inside of each mold with your desired chocolate/sprinkles/etc. first before pouring in the rest of the chocolate.
Place in fridge to let them set completely, at least 2 hours.
Pop them out and enjoy!
Note: Nutrition info will vary wildly based on what you use and how much you make - the information below is based on 12 ounces of white chocolate and 4 Tablespoons of caramel.