Muscular system? How to fill in right?

[Strung_hung]

How do I get a full bi-cep ball, were it comes from forearm towards the shoulder?

And

How do I fill in my ti-cep more, havn't problems with my arms.

Also,

Upper chest need some help?

[C-money]

Your muscle insertions are genetic bro, you can make your muscle bellies bigger but those gaps will always remain.... it sucks i know