Painting without a compressor

[Northy]

I don't want to do shells, but I'd like to be able to spray my wings (I think I need a new rear one as Jimmy has stopped taking pictures of my car!).
I have a cheap airbrush but don't want to have to have a compressor to spray them, do I have any options?

I'll also need to spray them in the shed as the kit car is sat in the garage and don't want over spray on that!