8:01 PM, Wednesday January 5th 2022
As rotating the page to find a comfortable angle of approach is part of the ghosting method which you should be applying to each and every structural mark you draw here, that is something you are expected to do consistently. I speak of this more specifically in these notes.
As to the line weight, all of those marks must similarly be executed using the ghosting method and from your shoulder (in order to flow smoothly and consistently), just as the original strokes.
Lastly, ghosting your lines further back to identify how they converge is perfectly fine. You can use whatever techniques you wish as the result is a single line that does not go beyond your intended points. You can also plot out as many points as you wish ahead of time - ScyllaStew demonstrates such a technique here.