8:26 PM, Saturday January 29th 2022
Woops missed a word in that sentence, corrected it.
"You're not extending every set of lines, please do so in the future or you're giving yourself incomplete information which makes the exercise less helpful."
If you look at box 18, 40, and 47 you've extended 2 out of 3 sets of lines.
In box 47 you have lines extended to the right, and to the upper left but you're missing the lines that would extend to the lower left.
Don't extend lines in both directions, just focus on converging your lines to their vanishing points.
Hopefully that clears things up.