Here are the results of my mouth makeup test for my Jeff the Killer cosplay.
Items used : Ben Nye Stage Blood, Snazaroo Clown White, Liquid Latex, Tissue Paper, Face Sponge, Paintbrushes
I am really pleased with how the scars came out
They came out a bit more ripped looking rather than cuts, but I think that they look better this way.
I also adore how the liquid latex/tissue combination has a creased/burnt effect, it's what I imagine Jeff's skin to look like due to him being a burn victim. The liquid latex makes it feel really leathery too!
I plan to do a full cosplay test tomorrow complete with mouth scars and hopefully a flattened nose.