A poster with a picture of a man with a bald head

Mr. Clean is a bald man with a single gold hoop earring, so Patrick Picard's head would be shaved smooth. The strong brow and intense stare that Patrick Stewart brings to the character of Picard would remain. Perhaps Mr. Clean's usual white shirt and pants would be replaced by the red and black uniform of a Starfleet captain. His earring might become a Starfleet badge pin instead. And that familiar bald head would probably still have its characteristic shine, as if freshly polished. I'd imagine an authoritative yet thoughtful facial expression, coupled with a commanding posture. This combines the capable leader qualities of both cleanser mascot Mr. Clean and Captain Jean-Luc Picard into one imaginary character. Let me know if you would like me to elaborate on any other textual details that come to mind!