Do not focus at all on HIS "flaws", or what you believe HE ought to work on.
Do not take his temperature, or check to see if he's "getting" it or liking it or any of that.
Just do YOUR WORK. If you are honest, you have a lot of it to do.
Totally agree. I'd also add, remember that you will both get different things and at different speeds. Don't have any expectations. Take it as it comes. When it comes time to discuss things, listen and validate.