I like how you're working bits of your established videos/instruction into shorter, easily digestible clips. As you build your brand, I think it definitely pays dividends not to "overload" people with information, while you continually familiarize them with your concepts and ideas. That way, when new customers finally buy one of your full length videos (probably spurred by one of these shorter clips), they'll feel comfortable with some of the concepts already, and identify with the consistency of your teaching.
Just my .02