Mechanics Tips (Women)

Now, any tips on how the hell I can get a freewheel sproket off with a (remover tool and) and fairly long wrench?
It's just not budging and keeps slipping out.
Sick of going to the lbs and asking if they can just loosen things for me.

Do you have a bike stand, J? I can't loosen stuff either, without standing on tools and there's only so often that that's useful. Bike stands help, though.