My main issue I have is that you sometimes tend to keep your lines too parallel to each other, not in the idea of 3D space, but actually physically parallel on your paper. That way there's no convergence at all, and this is especially evident in your last page. I feel that you should aim for at least some degree of convergence, even if it involves shallow foreshortening, which is something you should be aiming for the most. That way you get to practice estimating your convergences without drawing the actual vanishing points.

Another issue I have is that you sometimes leave out your extending lines when checking your convergences. For instance in boxes 184 to 194, you haven't included them. I feel that the more you use those lines, the more you can learn from your mistakes since this means you can have a look back at every single box you drew earlier on and point out your patterns. Also, make sure to extend your lines in all directions and not just one like you have been doing every now and then. You'll learn more this way.

Try to keep your lines straight and smooth, if possible that is. I understand that you have mobility limitations, so just do the best you can if your ability is affected by it.

I recommend using different colored pens for your extension lines so that it becomes easier for you and us to distinguish your convergence lines from one another. I'm not sure if Procreate has that option though, so you can only do with what you've got.