Different teachers teach different skills. I wanted to know how this teacher, Barbara, draw cats and what she could add to all the cat classes I had already done. It was good to see how she did research before she draw a cat.I will do more research too and emphasize on the different characteristics of the subject. (No surprise!) It is always good to see an experienced artist creating. There is no good or wrong, only good practice! 
Barbara had a tip for training drawing skills: make 3-minutes sketches of subjects! No matter what, but repeat the same drawing. You train your muscle memory! I tried it and it works. Not the best drawings, but I will improve!

I draw an Persian, Siamese and Angora cat in three different ways.

 

This drawings I made before I watch the lessons!

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Just for fun I transformed it in contour drawings!
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 Made after watching the lessons:,

Here are a few three minutes: