1 - Going on and on [5-6]
9 - U-shaped curve in a river [5]
10 - Our star [3]
11 - Sing softly [5]
12 - Rope used to catch cattle [5]
13 - Confused mixture [8]
16 - Deject [8]
18 - Certain to fail [2-3]
21 - Trudged through water [5]
22 - Female sheep [3]
23 - Angry [5]
24 - Pretentious display [11]

Down

2 - Approve or support [7]
3 - Efficiency [7]
4 - Remains of a fire [6]
5 - Lowed (anag) [5]
6 - Birds lay their eggs in these [5]
7 - Endorsed [11]
8 - Certainly [11]
14 - Curved upwards [7]
15 - Decorative style of design [3_4]
17 - Child [6]
19 - There are 52 of these in a year [5]
20 - Foolishly credulous [5]