Help on Spider-Man Costume design, chest to shoulder measurements on design

[John NotStamos]

So I am making a Spider-Man suit, and I'm trying to get the sides of the suit to perfectly collide with the arms. I am using the ASM 2 suit as the base and I moved the ridges of the chest up, but dunno if it'll look good on the chest to shoulder points. Here are some pictures of what mean

 

[John NotStamos]

The pure back lines are for measurements/angling, not for the final design