Tips to make teenagers look more like teenager?

Like others suggested, braces and acne (though admittedly both are never used in my gameplay, but this has given me an idea). As for dressing, it depends on the personality for me. What’s their style, what are they in to, are they trying to grow up quick or are they satisfied with being a teen, what are their parents like and do they influence their teens clothing. I have some examples of some teens I’ve created and made over, I can add them here later.