Lines and ellipses are p good in general, they do get a bit wobbly at times, specially your ellipses. Also your longer lines arch a little bit. So don't forget that in these exercises you should be focusing in confidence even if your accuracy gets worse.

Boxes are looking pretty good too. The issues you have is that in both the rotated boxes and organic perspective you got mistakes on the perspective of the boxes, which is completely normal, and nothing to worry about as you'll practice it on the box challenge.

Don't forget to add some of this exercises to your warm up.

Good luck and keep it up ;)