Pretty much the question really.

How do I compliment women I know, colleagues, friends, acquaintances, and so on, without coming off as a creep?

For instance, the other day, my coworker had a really good hairstyle, and I wanted to compliment her on it, but I just didn’t know how to do so without coming off as weird or anything. The same happened with a friend, who was wearing a cute top, but again, I just avoided saying anything.

Comparing this to other men, I’m easily able to praise them on their outfits and watches and similar things.

To clarify, I do not like any of the women in question or think romantically about them. They’re just friends and acquaintances, nothing more. Just people in my life.