These look great! On 5 I can see that in the reference the bottom part of the breast looks more flat and you made it more rounded, maybe if you make it more flat it will look like it's following the curvature of the ribcage more. The drawings look very three dimentional. Nice work!

Hi, I'm a beginner too so there's not much that I can contribute, but I saw your boxes of the ribcage and there's something that I was doing with my boxes too, until I watched proko's critique videos and realized I was making a mistake. Some of your ribcage boxes have a bit of a C shape (box number 28, for example). In some poses shaping the box like that can help the gesture, but in some cases the box could be drawn with straight lines and to give that fluid look try drawing the pelvis box in a different angle, so when paired up the two boxes give that C shape. Other than that I like your confident lines, they look great! (from what you said it seemed like you wanted advice on these, sorry if I misunderstood. )