Hey there! Congratulations on making it through the 250 box challenge, it can definitely be a bit of a slog but it sounds like you personally got a lot out of it which is fantastic to hear.

As you noted, you made big strides in your line confidence over the set. I did notice a bit more uncertainty in your last page of boxes but that might've just been excitement to be done! Similarly, your convergences also improve significantly, with your boxes going from not quite look like boxes (number 4 and 5) to looking mostly correct (they really start hitting their stride round box 80).

That said, you do have some lingering issues with your convergences as you can probably tell from your consistently applied correction lines. It might appear to you that the back lines are giving you trouble but mostly, errors on the back lines tend to be a build up of little mistakes on the lines drawn up until that point. We include this diagram at the end of each box challenge. Basically it demonstrates the relationship between the angles of your lines and the way that they converge towards the vanishing point. You'll notice that the green and orange lines in the image are pretty close to being identical in angle whilst the other lines converge at a sharper angle in towards the vanishing point. This may not make sense the first time you look at it or try to apply it, but keep trying - I certainly didn't understand it properly when I started TAing!

I'm glad to see you took the time to hatch the front face of each of your boxes as well as applying line weight on some of them as this is excellent free mileage. Keep your boxes in your warm-ups and try to keep the diagram above in mind when you do so.