Oh, to some people those subtleties of pronunciation are significant, but many/most English speakers just blow right over them.
I try to make just an infinitesimal but distinct gesture towards (tow-ards) voicing the letter looking up at me from the page, such as the "o" in sensor or the "t" in often.
Some peoples' heads explode when you try to get them to hear the difference between "pen" and "pin" or "Aaron" and "Erin" ....
Another example along those lines is the capitol of Ukraine, Kiev/Kyiv. When the war broke out, there was quite a kerfuffle about how to pronounce what we in America had always called KEE-ev. Afterwards, in spite of the fact that most actual Ukrainians explained that the word has more than one syllable but less than 2 syllables the distinction was just too subtle for simplicity-loving Americans. So on the news every day I cringe when almost every announcer says it as the one-syllable "KEEV".
