Here’s a tip: we know almost ALWAYS, when a man is admiring us. We can literally sense this from across a crowded parking lot. If her radar is open and she’s willing to receive flattery- she will notice a glance, a smile, and a nod or a quick compliment. She will reciprocate if she wants to. If a man approached me, and said what you said I would ghost him so quick and if he lingered I would reach for my knife. Your innocent approach is how many of us have been cornered and then assaulted. Some folks here have made some great suggestions. Move on IMMEDIATELY after the very friendly compliment. The words you choose are equally important. Stunning is romantic, whereas “you look nice! Have a great day!” Is much less threatening. A lot of women are hyper-vigilant. Not all, but a lot.