I can definitely see the frustration in some parts, as there are definitely sections where you rush without working in planned, measured fashion. Overall I think you're showing confidence and a willingness to draw without hesitation, but you do need to invest more time into the use of the ghosting method (its planning and preparation phases specifically), and get used to the idea that if you're getting frustrated or frazzled, it's better to take a step back and take stock of the situation. You may want to take a break if things are getting too irritating, or you may simply need to take a breath, but either way, drawing while feeling frustrated isn't going to yield better results.

Now overall, your work is pretty decent. Your lines are smooth and consistent, and you do use the ghosting method fairly well when you're not getting flustered. Just always remember that in cases like the organic perspective boxes where things get really difficult, it's easy to forget that no matter what, drawing a line always follows the same process - so don't let it get sloppy just because you're tackling a more difficult overall problem. A line is still just going to be a line, and therefore it'll require the full steps of the ghosting method.

I think you should consider this lesson complete and move onto the 250 box challenge, but definitely work on always adhering to the ghosting technique when making every single mark.