Melt your candy melts according to package instructions. Take apart cookies. Next dip your lollipop stick in a dab of the melted chocolate and press it into the creamy center of the Oreo. Place the top of the cookie back on and refrigerate until solid. Take your cookie back out of the fridge and dip the entire cookie on a stick back into the chocolate (reheat if hardens). Cover the entire cookie. Break a small piece of the end of the pretzel stick off and place it in the top of the cookie for a stem. Place candy eyeballs somewhere in the middle of cookie. Finally, add a mouth by putting the melted chocolate in a plastic bag and snipping off a tiny piece from corner. Then, pipe it onto the cookie pop forming a mouth. Refrigerate until hardened. Store in an airtight container.