Tips to make teenagers look more like teenager?

I'm lousy when it comes to fashion, sims or RL, but try some people watching at the mall to see what the folks in your target age groups are in. Have noticed that the teens in this version are more like late teens, 17-19, rather than earlier. Technically still teens, but pushig hard on YA status. You do have the right idea, focusing on attire since the physical appearance is all but identical to YA.