For the first 50, your lines are clean overall. However, I did see some wobbling throughout the set. Your convergences also show good accuracy, though I did see some lines pair off and converge towards two vanishing points, like box 8, box 25, and box 43.

For the next 50, your lines show improvement. While a little wobbling is still present, most instances are less dramatic overall, and less frequent. Your convergences also show improvement in accuracy, though there are a few more instances of lines pairing off, like box 56, box 77, and box 96.

For the last 150, your lines continue to improve. While some wobbling is still present throughout the set, most instances are notably less dramatic, especially at the end. Since it was present throughout the challenge, I do recommend reviewing the information in this section. However, your improvement shows that your technique is coming along very well.

Your convergences also continue to improve, though there are still instances of lines pairing off, like in box 106, box 174, and box 222. 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.

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