For the first 50, your lines are generally clean. However, I did see a little 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 in box 6's green lines, box 25's blue lines, and box 41's red lines.

For the next 50, your lines show improvement. Some wobbling is still present, but most instances are less dramatic. Your convergences also show improvement in accuracy, though there are a few more instances of lines pairing off, like in box 53's green lines, box 75, and box 96.

For the last 150, your lines continue to improve, with wobbling further reduced by the end. Since it was present throughout the challenge, I do recommend reviewing the information in this section. However, your technique is coming along well.

Your convergences also continue to improve, though there are still instances of lines pairing off, like in box 120, box 183, and box 227. 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, some of your boxes have some lines extended in the wrong direction, including: box 25, box 69, box 85, and box 230 (though I see you caught this one). It's not a major issue since it didn't happen often, but I want to point it out for future reference.

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