I'm 15, with thin skin!?

Urgh..this is very frustrating, because I'm so young, but I have thin skin on my face. D: It make me look older than I am, and I fear that as I age my skin will be translucent! But you see...I use a very gentle soap to wash my face, moisturize, take all my vitamins, and excercise. I am overall a healthy person. However, I am very very thin(a smidge underweight), which probably has a little to do with my narrow face/thin skin. Is there any way to get a thicker skin on the face/fatter face, without surgery and gaining lots of weight?? Thank you!