As there would appear to be a wealth of clever guys n gals in here, I'm hoping for a "prod" in the right direction. I transferred from producing Mosaics in Cold Porcelain to Digital some time ago. Basically I hand draw the Tessera [ the tiles ] of the mosaic. Anyway I am finding that part of the process involves creating layers and this process is causing what can only be described as a cloudiness between the Tessera. I've tried everything to counter this but no luck so far. Basically at the moment I have to finish the mosaic and then redraw all the lines between the tiles. Any guidance would be very appreciated.