Excellent question. Let's answer it:
For starters: Not lying about it. Not politicizing the wearing of masks and setting a bad example by not wearing them. Not holding superspreader events. Not getting it himself, and not having his wife, son, staff and virtually all his colleagues getting it. Not raising the possibility of insane things like injecting bleach or ultraviolet light. Not claiming that he has " a good a brain". Not claiming that he "gets this medical stuff". Not ignoring science, but actually TRUSTING scientific experts. Promotiing, rather than discouraging, the wearing of masks. Working with ALL governors, not just the ones in his own party. Taking responsibility rather than saying "I take no responsibility". Admitting that it's a big problem and not a hoax. Trusting the statistics instead of arguing against them. Being honest about the situation. Actually coming up with a plan for vaccine distribution, rather than just bragging about it but doing nothing. Working diligently to undo the damage done throughout 2020.
I guess that's what he's doing to START.