Maybe if the frog was orange or the wings were green it would look more like a single creature? The coloring and pattern on the wings is exactly like a monarch butterfly, so that doesn’t help either. Maybe some dragonfly or tinker bell style wings would make it look more “natural” as a fairy frog? Idk just throwing ideas out there, skull-snail is one color set so it appears as one but the contrast between fairy-frogs wings and body makes it look like separate animals.