Hi Bethany! I think you did a pretty good on the individual forms of the rib cage and pelvis. However, I think you’ve overestimated the distant between these two forms. A unit of measurement Stan mentions is that the distance between the rib cage and pelvis (in a neutral position) is about the distance of when you put your hand on your hip (rather on the top, iliac crest). Something that helps me remember proportions is that each pair of ribs (12 pairs) attaches to its own thoracic vertebra (from the back). Since the thoracic section of the spine is the longest of the three, the lumbar section must be shorter than the rib cage (or more accurately shorter than the thoracic spine). I’ve attached a few pictures from the Skelly app and a picture in which I drew the major masses in boxes to help you see the distance between them. Another thing I found is that, because of the proportion and distance issues, the spine looks unrealistic in its movement. You can see this especially in the last drawing. The lumbar section wouldn’t twist that dramatically. Maybe going back into the spine assignment could help? Another thing that could help is watching the critique video to see how Stan does and/or corrects common mistakes. I hope this will be of some help!