Are people taking a 2 week pause in the course while doing this challenge, or doing it concurrently with the lessons?

I made all the 4 drawings and made straight lines evrywhere and then transformed them into curves whereever I saw them. The skull with the hat was challenging due to many tiny details. Also, they are not really proportional as I have no idea how to take proportionate measures.

just posting this

This exercise is really difficult

Pear drawing completed