Unfortunately that's not something we're really equipped to help with. As much as we'd love to be able to help in that area, our limited resources keeps our expertise focused on conveying the principles and ideas, and leaving students to ultimately do what they can to apply them in their own situations. There are cases where the student is able to strike a balance themselves, and still benefit from what we can offer, and there are other situations where those hurdles are harder to clear, and run into harder limits in terms of where we can help.

This doesn't at all mean that the student is incapable of crossing that hurdle - just that it may require assistance from people with far greater expertise when it comes to both drawing and dealing with physical disabilities, which we simply aren't able to offer at our price point.

I'm sorry we're not able to help more with this, but with an understanding of the kind of motions we talk about in Lesson 1, you may be able to approach your physician to identify how those might be achieved, or comfortable compromises that may get you some of the way there.

I will say this however - if your disability makes the shoulder motions much less feasible to the point that it won't be something you can reasonably use in your own drawing, then you can make your own call on whether or not you should go through this course with your elbow instead. Most marks can be executed from your elbow decently, we simply focus on the shoulder because those who are able to use it comfortably certainly should. This is one of those "compromises" where it makes more sense to ensure you can comfortably and reliably create the kinds of lines you're going to be using the vast majority of the time, rather than throwing the baby out with the bath water to pursue marks you may only require occasionally.

That said, if the concern really comes down to the rotation of the page being inconvenient (but not impossible - so if you can unclip, rotate, reclip, etc.), then I would still advise that you do so - but I'll leave it up to your judgment.

Lastly, in future submissions make a quick note about the line quality being rough as a result of a disability, so TAs don't call it out needlessly. I imagine that would be rather unpleasant for you on the receiving end.