5:59 AM, Wednesday February 8th 2023
I'd definitely recommend against redoing exercises on your own. One because you don't know for sure that you need to (you may be buring yourself out without reason), and two because without proper guidance on how to make them better you may just end up solidifying your misunderstandings. Looking over your current work, I see improvements in both fronts, as far as confidence is concerned, but I'm not sure why you opted not to draw through most of your ellipses this time around. Anyway, now that you understand what to aim for a little better, let's try again with a more complicated exercise.
Next Steps:
Keeping the same level of confidence (or greater!), give me 1 page of ellipses in planes. I'm using these to judge your lines, as well as your ellipses, so take your time!