Ok, so I shrunk the bottom lip a tad due to the comments of my team members, but I now I have a question. By shrinking it, I made an even larger gap between the bottom and top lip. What should I do so that he does not look like a gaping idiot? Is there a simple way to bring the two lips together without causing stretching? (take into mind that the base mesh lips are overlapping).

Anyways, here is the render.