Hey there crllc. Good job on finishing the 250 boxes! For future reference, when submitting a set of something for review it is often helpful to number them for addressing specific points, but we will make do today.

So starting off, you've done a good job varying the orientation of your boxes as well as your rates of convergences. You have made a lot of good progress in your understanding of space and your sense of form and perspective throughout the challenge. Overall, your line quality is pretty good, but when you are applying your line weight to the silhouettes remember that it is an application of the super imposed lines exercise, meaning that you should be redrawing lines confidently on top of your current ones and not trying to carefully trace over them.

Your convergences are getting better, but you still have a decent amount of skewing going on. That's ok because uncomfortable has made this helpful infographic describing how to view parallel lines in perspective. The key point is that often times we neglect to treat parallel lines as a single entity all related to one another by their shared vanishing point. This means that every change affects everything else, which is most easily seen manifest by the interior angles. In a practical example: students often draw boxes plane by plane. So they start with the first plane, make sure everything is nice and converging and then as they move on to the next plane they do not account for the lines they previously set down which usually causes multiple points of convergence instead of the one vanishing point. To remedy this ,we must learn to "step back" and consider all parallel lines simultaneously - both drawn and yet-to-be-drawn. This can be quite tricky at first but as you practice this mindfully it becomes more intuitive and things start to fall into place. To summarize, start looking at parallel lines as a whole and not trying to get each line to converge one by one.

So you have done your 250 boxes, you have correctly applied your check lines, you've shown growth, and I will be marking your challenge as complete. Keep practicing boxes in your warm ups even though the next handful of lessons are very organic - you don't want to be rusty by the time you get to lesson 6! Keep up the good work and we'll see you next time.