Gosh I love the way you do the Eridian writing system. Is it just punctuation you do on the fly or is there a purpose for the symbols?
I use a few versions: punctuation for comedic effect, punctuation and tone clarification for translated Eridiani*, and full musical notation for untranslated. Most of the words in musical notes remain consistent in actual fics and I have a google doc of them, but sometimes if I'm adding Eridani to a drawing or quick post it's just random notes I smash together ^^
*I call the language Eridani instead of Eridian because there's only so many times I can put the word Eridian in a lore doc before it stops sounding like a real word lmfao.
As for the punctuation, it's used to clarify tones! Eridiani works like a song—imagine trying to comprehend the intricacies of a guitar, singer, piano, bass, and drums at once. To best put this into writing, I use subscript and superscript modifiers to a base.
"♩" functions as a "directional" noun. It clarifies toward whoever is being talked to without a modifier, but adding another layer to the speech gives it more clarification. Rocky talking to Grace would be ♩, but talking to Adrian about Grace would be "♩^[Grace]". These modifiers also work contextually and change depending on who you're talking to, so Rocky talking to another Eridian about the human as a mate might use "♩^[Grace-mated(RockyAdrian-Closed)]". Grace's students use "♩^[Savior-Grace]". His full name modifier would be "Grace-Doctor-Savior-Captain-Teacher-AdrianRocky-Mated," aka something I play around with and am not 100% set on yet lol.
Sentences start with a tone indicator. ♯ is for a sharper note, often used for excitement or heavy emotion. If you're switching back to a more neutral note, you put ♮ before the next sentence. I follow the tone indicator with a punctuation symbol -> a neutral question would start with "♮?".
To end an Eridian speaking, I use 𝄐 followed by no period.
Eridani to English literal translation: Hello Friend! Greetings from Earth. Humans occupy it. You well, question?
Eridani to English, literal with tone clarification: ♯! Hello, Friend ♮. Greetings from Earth ♮. Humans occupy it. ♮? How are you 𝄐
Eridani, written in full musical notation: ♯!♫♩ ♬♪ ♮.♬♫♪♪♩ ♫♪ ♬♪♩♩ ♮.♫♬♬♪♩♩ ♫♪♩♬♬♪ ♪^♪ ♮? ♩ ♬♫♪♪♪♫♫ 𝄐