1: Sibling rivalry's beginning - worry about it (7)

5: Navigate by terse directions (5)

6: Smuggler participating in arms race? (9)

8: Flower, large one, set up outside (5)

10: Edward, holding a bird, came behind (7)

1: Greenback entrances Microsoft boss (4,5)

2: Algerian city has grand musical instrument (5)

3: Three kernels of copper-yellow grain (3)

4: Form of address valued for the auditor taken unawares (9)

5: Hovel revamp ending depression (5)

7: Arenas almost filling with the hooter (5)

9: Clothilda is carrying a parcel (3)