Good vids tbody
Im no video expert or exercise expert but since u askd just my opinion for thought.. Maybe itd be helpful, since ur doing these for instructional purposes, if u lightened the weight enuff for u to be able to explain the proper form and why before u perform the exercise and also while ur doing it this way the viewer will know what to be looking fir and when to be looking for it .. Like u can demonstrate what an incorrect way to do it is (hence the lighter weight so u dont get hurt) as well as maybe address some misconceptions with proper form?? I dunno.. Just thought id throw it out there.. I knownfor myself especially the SLDL, rom DL, reg DL, squat, split squat, those DB lunges im doing..

just a few ideas for ya.. While ur doing the exerc ise it is not as easy to see whats right if we cant see an example of whats wrong
