Hi there! I'll try to critique to the best of my ability! Completing the first lesson is a lot of work, so congratulations and let's keep giving our best!

LINES

At the first exercise It looks like you are doing the lines with one long and fast stroke to get them straight , but with little control of where it ends because it's too fast! I can you are putting the effort to do it right, so try doing it a bit slower (but not slow! Just slower) and firmly, it will get really wobbly at first but as you develop the necessary muscle it gets easier and more precise! Just lile you did on the ghosted lines exercises!

The accuracy issues shows up in the ghosted planes exercise, and trying to do a bit more "ghosting" before actually putting the line down might help!

ELLIPSES

The ellipses are looking nice! The ellipses on the funnels exercise are anchored to one of the lines (most probably the starting point of the elipse drawing) and that might be the reason it doesn't fill the appropriate space. Try ghosting and slowly putting the pencil down, thinking more about filling a space instead of connecting two points (I hope this is not bad advice!)

BOXES

The boxes are great too. They are by far the hardest exercice here, and it feels you really took the time to do them (even though you didn't read the instructions properly and you know! Don't do that!) and the end result is great. There is a lot of overshooting on the market edges, you can correct these by putting little dots on the direction you want to do the line AND THEN drawing the line with the ghosting method (Like he did here https://youtu.be/jlJ6rwj3PKg at around 10:40).

OVERWALL

Great job! Hope you keep having fun drawing and learning