3. Touch on the one point that bothers you, like “It would be even better if this hat was [insert name of a colour].”
“It’s important to never disapprove of him. Be constructive when you tell him how to improve.” In this approach you list one point that bothers you, and make a constructive suggestion, like “You can look even better by doing this.” However, this could be challenging unless you can identify how to improve his outfit.