UPD: I just noticed that you've already finished this lesson so you can ignore my reply

Hi! Congratulations on completing Lesson 1!

Lines:

• Remember to use your shoulder and draw confidently to avoid wobbling and arching

• Take your time with the ghosting method

• In the Ghosted Lines exercise and the Ghosted Planes exercise it is better to draw not only short but also long lines and bigger planes. It will help to train your muscles

Everything else is good

Ellipses:

• Remember that you need to draw through ellipses 2-3 times

• You can work with the position ellipses

• No need to grind, you only need to do as many pages as told

• Remember about the ghosting method and do not rush it

Everything else is good

Boxes:

• In the Organic Perspective exercise you don't need to correct lines if trey are not perfect, just let them be

Everything else is good. You did a great job with the Rotated Boxes exercise!