Step 1
Mix 1 1/2 cups of vanilla frosting with the green food coloring. Spoon 1/2 cup of the green frosting into a resealable bag. Tint the remaining vanilla frosting yellow and spoon 3/4 cup of the yellow frosting into a resealable bag.
Step 2
To make Miss Spider's body, place the marshmallow cookies onto a wire cooling rack set over a wax-paper-lined cookie sheet. Heat the remaining yellow frosting in the microwave until just thin enough to pour, about 5 to 10 seconds. (Do not overheat!) Pour the frosting over the cookies to coat them. The excess frosting can be reheated if necessary. Let the cookies set for 30 minutes.
Step 3
Frost the tops of the cupcakes with green frosting and place a marshmallow cookie in the center of each. Snip a 1/4-inch corner from the yellow-frosting bag and pipe a 1-inch mound of frosting for Miss Spider's head.
Step 4
With a sharp paring knife, cut the spice drops into 12 triangles and insert them into Miss Spider's head to make her nose. Add a few blue sprinkles for freckles and attach the green M&M's for eyes. Use the tube frostings to pipe her eyes, mouth, and red top. Spoon the chocolate frosting into a resealable bag and snip a very small corner from bag. Use the chocolate frosting to pipe on her eye lashes.
Step 5
Cut licorice laces into 2-inch pieces. Insert eight pieces as legs on each cupcake. Snip a small corner from the green-frosting bag and pipe spots of grass around her legs. Add the flower confetti sprinkles.