These are definitely looking much better, and much more consistent. Not seeing any mistakes, so it seems that despite whatever happened before, your understanding of these forms and how they sit in space is correct.

As to your question, for the purposes of what we're doing in this course, you should not go back over mistakes to correct them. Reason being, when we make a mistake it's because something about our approach was incorrect. That doesn't inherently mean we did anything bad, just that we may need to give ourselves a little more time for each stroke, maybe we can plan/prepare better, etc. Mistakes aren't bad, they're guides that help us understand how our approach might be adjusted to yield better results, and while not every individual mistake needs to be analyzed on its own, they do form a pattern of behaviour that allow us to see the trends in how we work.

When we correct those mistakes however, we trick our brain to some degree to think of those mistakes as having been fixed, and no longer a concern, and so we're less likely to actually address it going forward. Instead, leave your mistakes as they are, so you're able to consider them and improve upon them later.

Anyway, I'll go ahead and mark this challenge as complete.