A nice wee grid, capped with a pleasing 1A1ACrowning achievement ends with belt wearer all tangled up in scam (10)[----------], cute 2D2DMarried after love- overdue! (4)[----], and the image given through 16D16DVolcano ups ante (4)[----] is good (if not wholesome). I vibed with most of the indicators that were used and eventually clicked to the americanisation of some answers.
In 14A14AMove mountain for friend (3)[---] and 8D8DWhale eats exotic flatfish entirely (9)[---------] you have indirect anagrams, which are normally considered unfair to expect solvers to parse correctly (especially when 8D8DWhale eats exotic flatfish entirely (9)[---------]'s doing other things too). I'm not sure it's fair for 5D5DAll ground I'm on (4)[----] to be combining form (prefix thing) instead of a full blown word.
I'm also very sceptical of 4D4DJelly makes a mess of a rag (4)[----]'s construction of DEF makes WORDPLAY. If you had WORDPLAY makes DEF here then I could have no compunctions, but makes definitely seems like a one-way linking word only to me.