For the first 50, your lines are very even overall. However, I noticed a little wobbling throughout the set, as well as a few instances where a line appeared to be drawn over, like box 12, box 26, and box 46. Your convergences also show decent accuracy, though I saw a few instances where a line veers off in the wrong direction, like box 9's blue line and box 33's blue line.

For the next 50, your lines show some improvement. While there are fewer instances of wobbling, some is still present throughout the set, as well as some arcing. I also saw more instances of lines being redrawn, like box 57, box 84, and box 93. Your convergences also show improvement, though I did see some lines pair off and converge towards two vanishing points, like box 52's green lines, box 72's blue lines, and box 97's green lines.

For the last 150, your lines show further improvement, though some arcing and wobbling is still present throughout the rest of the challenge. Because of this, I do recommend reviewing the information in this section and ensure that you are practicing the proper technique. I also see more instances of lines being redrawn, like box 110, box 168, and box 217. Remember that, for this challenge, it's better to have one smooth, confident line than to try to fix it by redrawing.

Your convergences continue to improve, though there are still instances of lines pairing off, like box 122's red lines, box 174's blue line, and box 229's yellow lines. In these boxes, the inner lines (green and orange in this diagram) diverge instead of converging at the vanishing point. Keeping in mind the angles of neighboring lines can help when planning the box's construction.

As an aside, box 181 is missing some line extensions. It's not a major issue since it only happened once, but I want to point it out for future reference.

All said, you did very well. I'm going to mark this challenge as complete.