1: Drawing, for example, a bit of a cartoon (3)
2: Some people differ about Castro (5)
3: Al's gamble on outcome of sports (4,5)
4: Therefore, finish off this bit of work (3)
5: There's uranium in many a flower (5)
8: Vagrant going over a little river to a foreign country (5)
9: Instrument on top of tree or shrub (5)
11: Toothpaste brand at Target? (3)