Is it really a good thing to look younger?

I'm 22 but I've been told I even look 19 since I have a baby face and probably because I'm more on the skinny side.

Sometimes I'd like to look my more age, but I really can't figure out how, I've tried a different make up (heavier which I didn't like) but I don't know. I use light make up, just eyeshadows, dark mascara and blush, my clothes are like Sezane and Breath of youth style, modest and not childish.

Any tips?

Is it really a good thing to look younger?
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