I would watch some anatomy videos on specific parts, that way you can get more comfortable adding detail. I think you can add a lot more detail even with the same amount of lines
(For specifically the bottom one) when the pelvic tilts the spine will bend and bring it closer to the ribs, account for that and the torso won’t be so long ?
I like the horizontal lines you use. I like to put them on the shoulders and hips and try to avoid making them parallel, it seems to avoid stiffness.
