>>10833995>>10834165I think the actual problem is the individually delineated teeth, and the fact that they're set so forward, making it look like he's intentionally making this kind of goofy expression:
Push them back a little, so that the shadow of his lip falls naturally over them, and just make them one lump mass, don't sculpt single teeth. The latter is almost always a bad idea in small-scale human sculpts, some things are just better when slightly stylized. Easy peasy.