Exploring Phonetics Question

I don’t quite know if this should be in off-topic or works-in-proggress, but yet still it is some kind of work in progress… so…

This is a question for those who know anything more about phonetics, I have tried find all over the so called “Places of Articulation”, and this is what I got: Is this scematic picture something about right?

(Letters to be pronounced by phonetic means, may not equal to english.)

Wow, I never have seen anything like this but it’s really cool. Everything looks right.