not informed of theories you might be taught to at school
well, i didn't have to go to school to know that crossing lines halt motion, and since it's in keeping with your personal preferences, neither did you

. It's all based (ideally) on concepts that can be discovered, and a good school merely strives to foster that discovery and is constantly inviting students to challenge what is presented; students are not just 'fed' information in the same way that those without a formal artistic background don't 'starve'.
Mia is very fluid, yes, and panda too, though they complement each other (panda being a fan of polished smooth curves and mia being a fan of expression)
ptoing's compositions are a very interesting thing to study because they are surprisingly grounded in classical thought, with or without his intention ^^. I use his pieces to justify the idea that practice and a good eye can rapidly ascertain what years of study can struggle to define*.
* the attempt of definition in itself flawed, as there are an infinite number of scenarios which present and infinte number of choices, with many of them valid and many "definitions" turning out flawed. Thomas Kinkade went to art school and learned all the technical skills and design theory and has yet to produce a good piece.