1. The webbing in the head fins seems to be a flat version of the glowing bits on the rest of the body, kind looks off. They clearly share the same color channel but it doesn't glow like the rest. So you have this fleshy bit that's flat like the non-luminous bits but the same color as the luminous ones, it doesn't really fit into either side.

2. Feel like the mandibles don't open up enough, also would be nice to have a more toothy design to look more monsterous. A full Predator-esque spread would be really cool and freakier looking, especially if they look more like things that would actually dig into you. Like hungry fangs.