Hey, sht. Good job overall.

You started with some wobbly lines, but managed to improve throughout the challenge. Nicely done. You still seem to struggle with that inner corner. Some people prefer to tackle it right after the initial Y and it seems to work for them. In my case, placing all dots before any line helped me as well, as I would create the "structure" of the box and could identify any major perspective mistake and correct it before drawing any lines. Don't be afraid of trying different construction methods, as long as they help you achieve your goals.

I feel that sometimes your shading is a bit sloppy and in some cases its lines arch a bit. Be sure to treat those lines as any other and draw them from the shoulder .

Anyway, well done in this challenge. Keep up the good work.