Your post is quality but lacks one quality. One which I've scanned to see on the list and didn't find it. Maybe, it's there, if not there, I'll add that a quality post is a post with references to the source. And it adds more quality to the first point on your list. References on a particular answer to a question facilitates a better comprehension to the reader by encouraging them to further research about the subject.
A quality post doesn't really need referencing especially if the op is the original owner of the work. The quality of a post is determined by the information enacted and the problems it solved in the community here. A post with useful information and education is already encouraging users who are free to do more research before accepting the information and teaching of the op. I think you should follow the information provided by@Lovesmayfamilis and be guided.