Homebrew PCBs

I'm working with some QFN leadless components and I want to make 
solder paste stencils to apply solder paste before putting them in my 
toaster oven reflow solderer. I want to just drill holes in some very 
thin (.008) laminate and align it with 000 screws, then smear solder 
paste over it with a flat blade. Does anyone have any guidelines for 
volume of solder paste for various size ic contacts? Thanks for any 
links or advice!

Mark