Preheat oven to 350 degrees. Spray Rocket Mini Pan with vegetable pan spray.
Prepare cake mix following package instructions. Pour into prepared pan, filling 2/3 full. Bake 25-30 minutes or until toothpick inserted in center comes out clean; cool in pan 10 minutes. Remove from pan and cool completely.
Trim off top and engine detail from cake. Reserve trimmed pieces for another use such as a pudding topper or for cake balls. With spatula or butter knife, ice smooth using violet tube icing from icing kit.
Using round tip and orange tube icing from icing kit, pipe spaceman face; pat smooth with finger dipped in cornstarch. Cut marshmallow in half for eyes. With cut sides down, attach to spaceman face.
Pipe pupils and mouth with blue tube icing from icing kit. Attach mini candy-coated chocolates with icing.
Using star tip and yellow tube icing from icing kit, pipe star pattern on cake. Cut regular spice drops in half. Attach to cake, cut sides down, with icing. Cut large spice drops into slices to resemble flames. Attach to cake with violet tube icing from icing kit.