Hi, if you've been struggling with perspective, I recommend that you read the "additional notes" page in lesson one if you haven't already. It might help you!

Congrats on completing the challenge! Overall, I find that it was really well-done, but I'll point out a few things that I've noticed (pardon me for linking the images, the numbers were really difficult for me to see).

I'll be talking about the shape on the top left of the second page here.

You can see that, with the lines converging to right, the top two ones seem to converge to a different spot than the bottom ones. Something that may help you imagine how you must draw your lines with correct convergence is by comparing the lines you already have. When drawing a 3-d shape (in this case a box), the first two lines that lie on the same "axis" create a vanishing point somewhere on the horizon. From there, you can compare how each line converges relative to the other (for example, if it converges harshly or weakly). From that knowledge, you can draw the third line on that axis and have an easier time thinking about how harshly or softly it must converge relative to the lines you already have. If the lines you already have converge strongly, the new line may converge strongly, too.

Another thing that is relevant to this exercise in specific; keeping a solid shape/form. If we look at the same box we looked at last time, you may see that it doesn't necessarily look too much like an exact box. This is a symptom of the problem that I've pointed out earlier, so if you see something like this happening at all, think about the convergence of your lines, and that may offer you a solution. Of course, this method of error-finding won't always work, as I assume that you're not always going to be drawing boxes, so use it when it deems fit.

TLDR;

• Make sure that lines on the same axis consistently converge to the same vanishing point