The thing that really stuck out for me was the method of critiquing work.
Set the scene:
This is what we are here to critique (ie. Don’t bring up the font choice if we are looking at the UX flow)
Start with what you like about the design.
Then add some critique with reasoning for your thougths.
Then finish with another positive.
Let the designer feel positive about the their work with some actionable insights to consider / work on.