Overall pretty good. But there are a few things to point out that are important, and appeared in all of your attempts.

1) You havent drawn all of your box lines (a couple of visible ones, but a lot of the hidden back lines). We are meant to draw all 12 lines of each box. That is far more important than shading. when shading make sure you arent drawing parallel to any hidden box lines.

2) Keep the gaps between boxe consistent. The prior box dictates where you will place the edge of the next box.

3) Rotation, you started to get it in the last one I think, but you want to rotate more like shown in this tutorial picture pinned at Lesson 1 on Discord: https://cdn.discordapp.com/attachments/368870697742630912/715669112222908466/zfr3o7xneog31.png

I'd like you to draw the rest of the lines on your last attempt. you can do that in a different color.