/ic/ - Artwork/Critique

>>4387469
Okay, I'll try to explain, first I want to indicate the trapezius coming from behind the neck but in a way that the figure for being female does not look very beefy.
I want something like this Jeanne in pic related but still transmitting that there is a muscle going through there.
I'm also having a hard time identifying which muscle passes between the chest and the arm, just above the armpits.

And the sternocleidomastoid that starts behind the ears and ends at the tips of the clavicles, but since the neck of a female figure is very thin, I don’t see how to connect this muscle behind the ear without going through the jaw, which would make it look strange.

Related pic are some images I used to try to explain this better