I have it! If you choose layer blending mode for the topmost layer to be "multiply", the black lines show up beautifully. Photoshop trick...

I have the same problem, and none of the answers help me: I want to fill a shape by placing an image shape on top of a Moho shape, and it always ruins the black edges that I want. Any other ideas than the ones posted?

Hey, nothing could be easier than lipsyncing with Moho. Create four or five mouthes instead of two, place them in a switch layer and choose a speak for source an you have it. Your way probably works, too, but don't give up on the moho way if you really want to try.

When i change the opacity or the layer blending mode, I don't seem to get a result. What I am trying to do is place one image layer on top of another as a sort of a colouring, but the lowest layer has black lines that I want to preserve. Is there anyone who can help me?