Missing 5 On Guardian Prize

[miyake]

Missing last 5 on Prize, all need to be solved, have an extra letter added, anagrammatised and inserted. Help with parsing very gratefully received:
LHS: 10a Small book by Lawrence, poet (6) .e.a.t Needs c adding. 13d Plane figure spoil, we’re told, on corner (5,5) g.e.t/.n.l. (I think). Needs u adding. RHS: 9d Iconoclast disturbing seed at hole (5,6) .r.d./s.c... Needs t adding. 19a stuff (half the crimson stuff) (5) .a.c. Needs h adding. 22a (Not sure if this is the whole clue) Cycling to far-off square for US outside broadcasts (2,6) .t/.e.o.. Needs j adding.

[Lie-in King]

10a Dante - 'Dan(iel; small book; Bible)' + 'TE' (Lawrence)
Dante + C - Decant

13d Rectangle - "wrecked angle", we're told
Rectangle + U - Great-uncle

9d Desecrater - anag 'seed' + crater' (hole)
Desecrater + T - Trade secret

19a Cram(oisy; crimson cloth)
Cram + H - March

22a Remotes - 'remote (far-off) s(quare)'
Remotes + J - St Jerome

[Toorak]

10 decant
13 great uncle
9 trade secret
19 March
22 st Jerome

[miyake]

Amazing. Thanks both!