These are some well done boxes! Your improvement is noticeable, especially how your lines went from shaky to well placed and executed. Great job there. Overall these boxes are good and I would say you're ready to move on but I have a few suggestions:

  • Practice boxes using foreshortening. Of the boxes you've posted here, most of them are from the same 5 or so angles and perspectives. Try to branch out a bit more, and look at the examples posted on the lesson page for an idea of dramatic and shallow foreshortening.

  • Make your line weight a bit more pronounced. All of your boxes display about the same amount of line thickness to them. I say go over the lines that are opposite the initial 'Y' you made and to give slightly more weight. Again, check the lesson page for some visual examples of how to apply this technique.

  • Unrelated to the boxes, but try to find a brighter light source (like a lamp or open window) to take these photos from. As it stands, there's a lot of shade and shadow that makes it a bit hard to see.