First, make your buttercream. Add one drop of pink gel food coloring and mix it completely. Then add 2 drops of red gel food coloring.
Mix for 4-5 mins to fluff up the icing and really saturate the color. Do not skip this two part coloring process. Red + white will give you pink no matter how much you add, you MUST dye it pink first, then add the red).
Fit a piping bag with the triple start decorating tip or a Wilton tip 18. The triple start tip will make this go a lot faster than the single star tip.
Pipe Stars all around the perimeter first then the center.
Carefully position the large eye balls. Next add the orange candy for the nose.
Open the oreos, remove the cream filled center and cut the cookie in half.
Place on the cupcake for the mouth.