For the first 50, your lines are clean overall, though I did see some wobbling throughout the set. I also saw a few lines that appeared to be drawn over multiple times, like in box 2 and box 34. Your convergences also show good accuracy, though I did see some lines veer off in the wrong direction, like in box 7, box 22, and box 50.

For the next 50, your lines show improvement. While some wobbling is still present, most instances are less dramatic overall. I also noticed fewer instances of redrawn lines. Your convergences also show improvement in accuracy, with fewer errant lines. However, I did see a few lines pair off and converge towards two vanishing points, like in box 59, box 77, and box 93.

For the last 150, your lines continue to improve, with wobbling growing further reduced towards the end. However, since it was present throughout the challenge, I do recommend reviewing the information in this section to ensure that you're practicing the proper technique.

Your convergences also continue to improve, though there are still instances of lines pairing off, like in box 113, box 175, and box 234. 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 124 is missing some line extensions. It's not an 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.