Many brilliant clues, I especially liked 4d and 9d.

Pelham: I did consider that reading of 4dn, and you’re probably right – but ‘embody’ struck me as an unlikely insertion indicator.

Joe: I think the definition of ‘Italian’ in 13ac. is “one [who may potentially be] a Latin”, i.e. a European speaking a Latinate language. As for 13ac., I think “artist’s a turner” should be read as “artist is a turner”, i.e. drawer [artist] turns around.

8A: I can’t see ‘has a turner’ stands for reversal here.
13A: Isn’t it a stretch too far? Moving from one to I and then to Italian?

14ac: exalt can mean either “raise” or “praise” so I would give this as P + raises & lit.

24ac: no[4] is given as the first spelling in Chambers 1998, with noh as an alternative. This is an old favourite crossword device which I remember from crosswords long ago, but not recently (until today).

4dn: I think the word “official” in the clue only contributes the L to the anagram: the A comes from “embodying a” so I would give this as A in anagram of an (officia)l spins work.

19dn: Again from Chambers 1998, or³ for yellow is the usage in heraldry.

21dn: The words “coming up” led me to expect a reversal, but of course the phrase “coming up short” is a perfectly good indicator for a simple truncation of a word.