1: Throw out faulty nib (3)
2: How Nero holds one in control (5)
3: Puff from lips into hat (5)
4: He appeared to cross-breed elms. (9)
5: Lady sitting atop a bird (5)
6: Prisoner with severe cramp (9)
7: Settle standard kilometer (4)
8: A favourite car of Seattle natives. (11)
11: Sly dog covers horses for dancers (3-8)
13: Cut material had value (9)
14: Moderately amphibian, for example, by the middle of the creek (2,1,6)
15: Proclaimed head of the French delegation initially eating roast (9)
19: Run around near a stadium (5)
20: Discharge space-talk (5)
21: Prepare for onset of torrential downpour (5)
24: Beauty stripping top and bottom is an additional feature (3)