That's the opposite of what I'm doing.

I use occlusion master to avoid using AO in a light, my computer is not fancy eonough for that, and I just want thing to shadow over the main character, but in a soft way.

as an example: the hair of my actual render (where I'm using Occlusion master in a A3 character) projected a shadow of itself over Aiko's face. That's good, that's correct. But the shadow wich was projected was too sharp... I can't describe that without illustrating what I want...

Like when you put your hand between a lightspot and a wall; closer your hand get's to the wall, shaper the shadow appears; the closer your hand gets to the spotlight, the shadow projected gets smoother.