Hi @robis, good job! The structure is good for the most part and you seem to be understanding how to use the bucket to construct the pelvis. - In the 2nd image the structure of the pubis is a little ambigous. I would recommend making things more angular like Stan does, to stay in control of perspective. Also, don't forget to indicate the thickness of the pubis, aswell as giving the obturator foramen it's correct size (it's a little large in the drawing to the right) - In the drawing to the right in the 2nd image, the placement of the sacrum doesn't seem right to me. I struggled a lot with the sacrum when I took the course. One thing that helped was to first draw the surface on the illium which the sacrum attaches to; you find the PSIS, then construct a plane from there (see paintover). Then you fit the sacrum in there, making sure that it's lining up with the 3rd mark on the back of the bucket. Hope this helps :)