Just hang in there, all I can say right now is maybe you should do a few 5-20 minute poses trying to figure out where the body overlaps to show volume instead of using shading for now. At least for some of your figure drawings, doing shorter ones can be very overwhelming. I think the shading on the chest was made because you realized it looked a bit flat? How would you make a box solid on paper? Anyways, keep it up, like to see the updates
boop