Same. I’m not a teacher either but being an entertainer/educator/personality online I have teens that follow me and I make it a point to provide specific, meaningful compliments now and again. Sometimes even just a like emoticon or “Awesome!” is enough but I try to be specific and positive when I can.
More important than how I do it, is the fact that i mean it. I care. I believe at some level there are some kind of invisible connections between people and cultivating one’s own positive (yet also matter-of-fact as well) attitude improves people who see you.