I was a twink. I'm 48 now. I can kinda grow a beard – and when I do I look really good -- but nothing on my cheeks. When I shave closely I'm always mistaken for early 30's and get comments like "babyface", which you'll appreciate when you get older.
I could not put weight on no matter what I did until I got a personal trainer around 30 and devoted myself to diet and exercise. I think the combination of diet, exercise, and age helped propel me from 70KG to 100KG. It took time but I got ripped and buff. When I did, people saw me differently, less bottom and more top.
Congratulations! Putting on muscle mass is difficult, and you have my respect for being able to do that.