If you and your best friend took a walk and came upon a dog, what would you think? Cute puppy, so pretty, ooh, he's slinking toward us because he wants to be petted. What would your friend be thinking? Same thing? Maybe. Maybe not. Maybe s/he's thinking, that dog is so dirty, look at those teeth!, oh-no, it's creeping close enough to attack.
As you write (or channel) your characters, keep in mind that they won't always think as you do. They won't notice the same things. They may not have the same beliefs as you. Of course, that's true only if those characters come to life and move beyond being just characters you thought up.
Currently, I'm in New Mexico on a business trip with my husband. The trip's been on my calendar for a while now. But, being the procrastinator that I'm prone to be, I hadn't even thought about what I needed to pack. So I asked him what events I would be attending at the conference. He said, one formal dinner, one nice dinner, one casual dinner. Finally, three days before we left, I decided I'd better figure out what I had to wear. So I rummaged through my closet and tried on three dresses and walked the "runway" from my closet to my husband's office to get his opinion. Soon after I'd settled on three dresses, he gave me the itinerary. I looked it over and then asked, "Did you notice that this 'nice' dinner is actually a Fifties Party? He hadn't. He's been to so many conferences, he just packs suits and underwear and walks on the plane. I'm not kidding. I've seen him leave for a three-night trip and take nothing but his briefcase.
We are different. He is the ultimate traveler and most efficient packer. I am not. We've lived together enough years that in a lot of ways, we're alike. But in more ways, we're different. This is reality. Your characters should live in a "real" world, as well. Make each character unique. Let them be the people they are. Don't force them to do what you need them to do. They must do what they need to do.
Before you leave, tell me what I should wear to a Fifties party. Rolled up jeans and white tennis shoes? What did teens wear back then?