Try this
- Choose one detail you can describe plainly. Keep the compliment free of instructions about how they should look or behave in future.
- If you do not know whether appearance comments are welcome, choose another kind of observation or ask.
A worked example
“The green scarf works beautifully with the coat you chose. I like the combination.”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
A compliment does not grant permission for touching, photographs or repeated commentary. Let the person’s response guide whether the subject is welcome.