What should I do to get fat on my body and fuller cheeks?

I am 28 years old Male. I am 5'8" and my weight is 55 KG. My face is extremely thin. My cheeks look like oldy , wrinkled whenever I smile. This make me look weak and old. My weight also not perfect to my height. I take enough fat in food but that not shows on my body and never on my cheeks. Please suggest me what should I do to get weight and fat on my face. Thank You.

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