A Few Cryptic Clue Answers I Do Not Get, Could You Explain In Detail, Please, Thanks

[merlion7]

1) Reform I support by day IMPROVE

2) Some beggars housed by marrying female soldiers BRIGADE

3) Not all appear to get it SEE

4) Second bit of icing added to a cake SCONE

5)Turned down in Thailand old servants..... MAIDS

6) Inept sort of cast tolerating parts BUNGLER

7) Passage a hundred added to EXTRACT

8) Another tense amphibian NEWT

9) English flower that's no good OUSE

10) Engineer about to ace a test EXAM

11) Paper read aloud for singers CHOIR

12) IT's clear one's left a diagram PLAN

13) One penny each, It's thought IDEA

14) Photo diminutive king's not in SHOT

[aelmpvw]

13 id (one penny) ea (each)

[aelmpvw]

12 plain minus i

[factor-fiction]

newt= new +t?
choir sounds like QUIRE
PLAIN minus I (one) = PLAN

[hc4361]

12. It's clear = plain; one (i) has left. Plain without the i.

[factor-fiction]

S (second) + CONE (ice cream cone)= SCONE (cake)

[dannyk13]

1.Im pro = im for(support) + VE day
2. Some beggars= ga inside bride
3. See(m)
4.Second=s + bit of icing=cone
5.D in Siam reversed
6.Cast=bung + (lol)er(ating)

[dannyk13]

7.Extra +ct
9.o use

[factor-fiction]

Engineer = E
about to ACE = to MAX backwards

[Johnh42]

14 short without r (king)=shot