Well I´d say this is on a whole different level from your first mesh! ;) I would recommend you though to look at the silhouette and refine the intersection from ribcage to pelvis. Right now it looks a little like an hourglass to me because of the fast tapering ribcage. Armpit could connect higher to the body as well. And…
And a small advice for edgeflow issues: Don't try to do all at once. Start in smaller steps. If you are using retopo tools you can start by drawing the edgeloops that you want to create first and only later connecting them. So you will know which parts are 'set in stone' and what can be modified to follow those priorities.…