1: From memory, next to courage (2,5)
2: Skill is extremely tangible for a performer (7)
3: Cartoonist is to finally sell toy gun (3,6)
4: Black arts and demons concerned with Homer's issue? (4,7)
5: Fix the oil platform ... (3)
6: Records that could be hits (7)
7: Throws out the pressman returning to play sport (7)
10: Nothing we have to pay (3)
12: A properly run lottery might be a complete success (1,5,5)
15: Giant fish, note, approaches Italian city (not capital) (9)
16: Frank turned brown sitting on mountains (7)
17: Grass present round container (7)
18: Moulded indicator of irrevocability (3-4)
19: A sign Tommy's upset about patrol leader (7)
21: Carries most of sea-bird back. (3)
23: One final, huge Greek goddess (3)