German pronunciation: the vowel A

A few years ago I drew a few pictures about German pronunciation and when I was looking at my old pictures I felt like doing a few about that topic again.
For this I orientated myself on the International Phonetic Alphabet (IPA) and actually it's more a "haha, languages are fun"-picture...I donT' know if it really helps someone.
especially since it seems like there is no deep schwa in the English language (just the normal Schwa [a]). It sounds incredibly similiar to the normal schwa, so perhaps this actually  is a help for some people.

What is important for me, because it sounds kind of weird  otherwise in my opinion, is that the "er" that is at the end of a lot of German words (for example Lehrer, Schüler, Zähler, Alter, Falter, Mutter, Vater) is pronounced as an "a".sound and not as an "r"- sound...it is happening ina few (Southern German) dialects, but in Standard German you'd use the deep schwa (third panel).