How to build more muscle?

im 5'10 160 14 years old i wanna get bigger in muscle wise like my chest and arms and get rid of some of my belly fat and do i need to gain more weight i wanna be a linebacker type size when i grow up like ray lewis it would be awsome to be as big as him. if this helps my dad is 5'11 my brother is... show more im 5'10 160 14 years old i wanna get bigger in muscle wise like my chest and arms and get rid of some of my belly fat and do i need to gain more weight i wanna be a linebacker type size when i grow up like ray lewis it would be awsome to be as big as him. if this helps my dad is 5'11 my brother is 5'11 and a half my mom is 5''3 my sister is 5'6 and everyone on my dads side is 6 foot and my uncle on my moms side is 6 foot something but i will only grow to 6'0 if that.
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