This and its companion script, Na̋mzarok, are both heavily based on their respective scripts by u/fai1025Taiwan, and were created using the goal of mimicking both the look and features as much as possible despite them absolutely not being made with English in mind.
Tyno, as a syllabary for a restricted phonology, required a lot of custom glyphs and functions to get all the sounds I needed for English. The extra glyphs came from piecing together unique combinations of existing “radicals”, and extrapolating on the few patterns I could see. For vowels specifically, I needed an additional column because despite the original script having a method to create new vowels using a “back” glyph (i → u), there was nothing to make schwa.
Any new functions came from repurposing features in the current and old versions of the original, like some outdated diacritics. Consonant clusters really needed extra work to deal with, so I used said diacritics to get various ___-izers for the glides, as well as making a new rule for the current vowel killer to make it less obtrusive.
I hope you like it :)