Hello, here is suggestion as a overpaint. THe diesign is interesting. For improvment I would sugest you to focus on simple forms, how they turn, elements can be simplified to better represent the reality. Eyes are half spheres, teeth are cones, fish paw is a few cylinders connected toghther, fish jaw is also bent cylindrical surface, so in perspective it will turn away from a viewer. Hope that will give you some ideas, keep up the good work!

