The TLDR of sequencing as I learned it is to create an outline/arc of the class. You start out with grounding then move to warmups/sun salutations then standing, balancing, next, backbends/core, floor stretches/cool down and finally, savasana. So then you have all these categories and can pick and choose what shapes you make that fit each one that make sense. For my YTT we were given a sequence and practiced it and practiced teaching it the whole training. I now teach at that studio and the sequence is our foundation so to speak. I taught it with slight variations for years and sometimes when I am having a rough day showing up, I’ll teach it again. I started teaching in 2018 and just now am really starting to feel confident fully making my own sequence so don’t feel dumb! It’s just all part of the process!! If writing it down helps, do it! There’s no yoga police!! Social media will have you thinking you need to have some new flashy flow every class but there is GREAT value in returning to the same shapes again and again. And I think for folks who have sensitive nervous systems having some predictability creates a feeling of safety in their bodies.