Hi un_tipo,

Lines:

Do not worry too much about over- and undershooting, as accuracy comes with practice!

What you could maybe improve quicker then accuracy is the straightness of the lines. I see some wobblyness in your superimposed lines and that might hint at drawing from wrist or elbow instead of the shoulder. Since drawing from the shoulder is new to most people starting with lesson 1, it is not entirely unexpected to struggle with that. But in contrast to accuracy you can learn quite quickly to make smooth, confident lines.

I think one way to practice this is the ghosting technique. And I think I do see that reflected in your ghosted lines, which look much more straight already!

Same goes for your planes. They might even be better then your ghosted lines!

I see some instances of corrected lines, though. Please suppress the urge to correct any lines. The goal of those exercises is not to nail a specific shape and accordingly you do not need to hide any mistakes you make. (I know this is hard, I am the type of person who cannot simply cross out mistakes in my handwriting but who will hide them under scribble clouds!)

Ellipses:

Most of your ellipses in the tables look quite smooth and symmetrical. They do however sometimes float in the air a bit. In some of the panels you could have planned for ellipses that fit better into the space.

The ellipses in planes fit better, as do the ellipses in funnels. Did you focus more on fitting them into their space when you ghosted them? because if so, it shows! In general: Planning your marks and ghosting them will give you neat results since you think about your goals before drawing and then "practice" in the air before executing them.

One more compliment regarding funnels: You aligned the ellipses by their minor axis and they are also very symmetrical! Well done!

Boxes:

Plotted perspective looks good.

Rough perspective also looks fine and I do see already an improvement in aiming for the vanishing points between page 1 and 2! Impressive! :)

I like your rotated boxes! I rarely see the space used as good as you did, the sphere is almost there and your lines are quite clean and easy to read. Really good work!

Similarly, your organic perspective exercise also looks great! With both rotating and scaling the boxes!

And just to point that out: Your accuracy already improved over the course of lesson 1!

My advice would be to tackle the 250 box challenge next. The ghosted planes and ellipses within those planes are good warm ups for almost anyone, but if you want to improve on your accuracy, those are especially useful.

Do not forget to draw from the shoulder and to ghost and I am quite sure your challenge boxes will look good!

Good luck moving forward

Jack