6:30 PM, Saturday May 9th 2020
First of all, I wanna say that you don't need to get the pens that drawabox recommends you, a ballpoint will do the job greatly and your learning will be wayyyyyyyyyyyyyyyy, better with ballpoint, so please, do the following lessons with a ballpoint. Ballpoints are only a few cents, and they are sold at the supermarket, if you don't have already a bunch at home.
First thing, congratulations on finishing the box challenge! I'll go over what I can notice on your work.
First thing I notice is that you're drawing quite small, and you could be drawing with your wrist because of the size. In this exercise, you should be drawing max 5 boxes per page, filling the page completely. It doesn't matter if the extension lines of the boxes collide with other boxes, draw them as big as you can.
You also mantain some issues with line extension through the challenge, as shown here,lines should always be extended away from the center of the initial Y
You do have some clear divergences as well, as shownhere, it's something that can never happen, careful with it.
Last thing is your hatching. You have fraying on both ends on it. Don't neglect it.
Next Steps:
Before marking this as complete. I want 12 more boxes from you drawn with ballpoint pen. Draw 3 per page, as big as you can, it doesn't matter if the line extensions collide with other boxes.
Be sure you apply the line extension correctly on each page before moving to the next, and good luck! Keep it up, you're almost there!