1: Top card? Excellent! (3)
2: I am reported to leer (3)
3: See one store walled by brick, mostly (9)
4: Path of planet - or particle (5)
5: Keep back a missing ingredient for gunpowder (5)
8: Carrying on thus, for some reason I create a sort of boom (5)
9: Part, or bring together (5)
12: Nothing we have to pay (3)
13: Sounds like everything: a bore (3)