Young adult male JW, time: late 1960's.
You didn't state which country or which state or if he is from a small town or a large city.
Don't know how technical you want to be to flesh him out, but If he is in high school part of PE (Physical Education class) for young men in a large city, included military marching and drills. JW men at that time were not allowed to do that so some had the option to take an alternate PE class, one such would be Modern Dance. Yes. They danced with the ladies and were the strong arms to do all the lifts. They were quite popular with the girls in class but their male peers rather looked down at them as "poofs".
Also, if he was reaching to soon be 18 years old, he needed a typed letter to be sent to his parole board, explaining that being an ordained minister, he was asking for a 4F (I believe that was the number and letter, best check on that info if you need it) as he was a conscience objector to war. And that brought all of it's own problems...
I could tell you about a whole array of different brothers in the late 1960's.
Does your character date? Go to parties? Dress stylish? Drive his own car? Have a part time job in guessing that he is still in high school?
Do you want to know about the ones sent to prison and how some were sent up for 2 years and some for 5?
Some pioneered, looked around, found a willing pioneer sister and married. He either stayed pioneering for deferment or she got pregnant.
I know one who went to college because he always wanted to be in the medical field like his father. That kept him out of pioneering and going to prison.
He is the only brother I knew of at that time that pursued an education and a career choice from my city area. He still went to the Hall, commented and gave student talks. In later years he helped make The Blood video for WT.
Is your young man a good JW or... ?
Hair length. Long hair was in. JW guys didn't want to stand out as military and so they did wear their hair a bit long only around the ears and their collar, long, as in touching, not hanging.
I am curious what kind of a JW will you make him? I hope you make him wake up to TTATT, that would be totally outstanding! I also hope too, that he is smart, gets a scholarship, after that get the job/career that he wants, finds a lovely girl to make babies with and is now a happily retired grandfather, doing exactly what he wants and is master of his own life.