2:21 AM, Monday February 3rd 2020
I do have a video in lesson 1's page on this topic, and it is on my list of videos to redo so I'll try and address it more at that time. It's not going to be coming up in the next few weeks though as I'll need time to recover from all the work that has gone into the community platform.
That said, there is one important thing your question overlooks, though that may be understandable if you haven't gotten too far into lesson 1's exercises just yet: we always rotate the page in order to give ourselves as comfortable an angle of approach as we can. That is, that's what we do in the context of these lessons, in order to build up the general understanding of how the arm works, and how best to use it. Outside of Drawabox, you apply that understanding, but you aren't bound to any such rules.