I have one or two concerns with the way a few things were depicted visually but overall this is super important.
Oh and by the way, yoga done from the original blueprint of bad posture often makes things worse! i.e. forward bends with the curve absent or reversed in the lumbar (not to mention headstand or shoulder stand with the head projected forward from all that texting). This is why props and proper instruction can be so useful for so many of us!!!