Hi @Bryan Del Rio, I think you've done a good job! Good structure! I'll do my best to help you further: - 2nd image, bottom right, I think the thoracic arch is a little small - 2nd image, top right, I think the perspective convergence is off. If we were looking at the ribcage from the left, the lines would converge the way they do in your drawing, but since we're looking at it nearly straight from the front they should be more parallell - I personally like to indicate the thoracic part of the spine as well, when studying the ribcage. It's a c-curve tucked into the back of the ribcage. - You seem to make the distance between the ribcage and pelvis too long. Indicating the spine can help with that. Another thing that helped me keep the distance in check was to practice the robo bean with a connection of decided length, between the two boxes, as seen in the lesson video at 04:57 https://www.proko.com/course-lesson/how-to-draw-structure-in-the-body-robo-bean/notes To get a feel for the distance you can try drawing a couple of robo beans from imagination with the connection included I hope this helps :)