We have the same model for two weeks with usual format, 20 mins warm-up then a longer post. I did all drawings with white chalk on black A1 sugar paper.
I am quite happy with the drawings in week 1. I think I got the proportion and solidity right. However, I am not particular happy with the hatching. They can be a bit tidier.
In week 2, I experimented using different weight of the lines. I am particular pleased with the result on the right leg of the model of the short post. It shows exactly the light from the lower right angle. I was struggling with the right leg of the longer post. I am still not happy with the hatching.