1:14 PM, Sunday December 20th 2020
Hi !
For the most part the boxes are well made. The lines are confident and the extensions are in correct direction. Coming to your question regarding the hatching you have done is correct for the most part. When drawing a box there is always a focal point. This is the edge closest to the viewer. It's the center point of all the extension lines. There are three planes along this point. You may see that all boxes have two Y. One is in the front while other is in the direction opposite of the front one. You can hatch any of the three sides connected to the Y in the front. Hope that clears your doubt.
Now with the critique.
Below i've pointed out the things that have noticeable errors.
Things to look out for:
1) You could have drawn boxes with more foreshortening . When the boxes are foreshortened the convergence point lies closer to the box. This forces you to think about convergence making drawing boxes harder. This is an important thing that needs to be practiced. While drawing boxes whose vanishing points lie far away you miss out on the important skill of thinking how the lines will converge.
(See revision column)
LINK
https://tasty-tangy-meeting.glitch.me/
Hope to hear from you soon. Feel free to ask any doubts by responding to this post.
Good luck! O~O
Next Steps:
To ensure you learnt how convergence for foreshortened boxes work it would be really helpful if you drew 20 foreshortened boxes. Try to bring variety in boxes and you can use the link above to help different angles for drawing the boxes.