What catches your attention first when you just meeting someone

I have this habit of looking at someone's feet whenever I'm meeting them. I can tell the type of person he or she is just by looking at his/her feet- weird I know(lol). But over time I have mastered this habit of mine and my assumptions are always right- most times *eyes rolling* And sometimes I'm a little bit extra and I notice their nails either fingernails or toenails.lol

What do you notice when meeting someone for this first time?