Hello chieftang, welcome to drawabox.

  • Lines:

They look confident. For superimposed lines, Remember that there should only be fraying on one side, not both. Pretty sure its only one page of ghosted lines but hey nothing wrong with more practice. You also could have put your ellipses in the first planes that you had but more practice right.

Ellipses:

I like your tables of ellipses, they look really confident and you are only drawing through 2-3 times. For your funnels, you should not draw the ellipse in the middle.

Boxes:

Your boxes also seem pretty confident. The first part in your plotted perspective looks really confusing but the second two look much better. Your rotated boxes look good too.