21ac def is 'the very best'. Deceptively simple.
21dn the 'p' is wrong. First part is a reversal of word meaning 'painting' def: 'his column'
22dn the 'n' is wrong. This is one of the theme clues, haven't fully parsed it, but it's a pretty obscure word
34ac parses as ?+?+?. Not a theme clue. The last three letters are a familiar worker
Hope this helps!