I’m currently working through the 250 Box Challenge, and I’m unsure as to best practice while plotting then drawing the boxes. I start by plotting a center point then three additional dots to create the Y shape, then I ghost and draw lines from the center out to each of these three outer points. However, my accuracy isn’t all that great, so I quite frequently over or undershoot my target, or miss it entirely. My understanding is that we are supposed to stick with a single line without attempting to correct. However, I have the following questions:

If I aim for a point but undershoot it, is it okay to go back and draw another line at the end to fill in the gap? Or is it better to leave the line as is so that I can see my errors?

Assuming I should leave the line as is, if I undershoot in one of the lines that make up the silhouette, when going back over to add line weight should I be drawing just over the line I made or is it better/acceptable to make the line the full length that it should be?

If I miss the mark on one of my first three lines, I can still make a “perfect” box if I work off of the end of the miss-drawn line as if it were what I had originally intended to draw. This leads to better looking boxes, however I’m not sure if I’m hurting myself in the long run by covering up my errors like this, since you no longer see that the line I made was actually not what I originally intended to draw. Is it better then to continue working off of my original plotted points, regardless of mistakes made in the process, or is it better to modify my plan based on how my lines are actually turning out?