Everything that Caffeenman says, but to add just two little things -

First, you will know when you are really getting the resin out of the cloth because the wiper will "buzz" on the weave in the cloth, even with 1/2oz. You will know if you got it right when the resin is set because your fingers will feel the weave as well.

From that comes the second. As Caffeenman says, give it a light sanding...I use a piece of w&d400 grit and just brush very lightly with it. On those bits where you want to "taper out" the cloth use 200 grit and a 1" square sanding block. Why? So that you know exactly what you are sanding and where. The big danger is that with so little resin over the cloth it does not take much before the sanding starts to cut the glass fibres. At that point you have wasted the glass, resin and time.