Simply use the images provided to submit for brand approval or brand registry including any other requirement Amazon needs from you. If you get rejected by any means, keep submitting. You’ll get another reviewer who will eventually approve it. 

Please note: I do not work for the academy. I myself am a boss academy student like you all and happen to own a printing company. Since the mug printing worked for me, I decided to offer the service to you all. If you have any questions to ask about brand registry or brand approval please refer to the facebook group and ask those questions there. You'll have more people to bounce questions off there. I just offer the printing service.