While your drawings here certainly aren't perfect, what I'm seeing is a lot of good. You've got a lot more patience, and lot more fastidious and direct study of your reference images, and vastly more subdivision to more carefully pin down all of the specific elements of your constructions. It is normal that in a forest of lines like this, you might misremember which one is which, and end up with mistakes here and there that undermine certain points in your constructions, and that certainly happened on occasion - but as a whole, I am much more pleased with your results.

I am going to go ahead and mark this lesson as complete - so congratulations for finally completing the core content of Drawabox. I do have a couple suggestions to give you for tackling this kind of material in the future.

Right now, looking at the SUV drawing, one thing that may well have helped is to build up your constructions with simple primitive forms first, within the framework of the enclosing box and its subdivisions. For example, you didn't build out your major boxes for the core body of the structure, and jumped right in with individual edges. You're just making things harder for yourself by avoiding steps that help provide key information, and give you a more solid footing off which to work.

The other point is simply to work with high resolution images. I'm not sure if the images you shared were the full resolution you were working with, but it does appear that the SUV was very low res. This makes it harder to distinguish things, and makes observation in general harder than it needs to be.

Anyway, keep these points in mind as you continue to move forwards. Still, you've done a great job and have shown a good deal of growth over the course of this... well, course. Congratulations again.