This is actually really good!! The color scheme goes really good together, except the blue. Maybe the blue should be lighter to contrast better with the warmer colors?? I don't know just a suggestion !
Hmm, a little bit on the shading/lighting: The light source is behind the character, correct? As, that is where the sun is, yet, the lighting seems to be coming from somewhere a little bit off the left. The shading, on the other hand, is really nice, although some details, like the face and toes, are not as clearly seen. Also, the reflection looks like light hitting the water. The light is, again, coming from behind, so you should see a darker contrast of where the animals shadow is hitting the water. There should also be an actual reflection. Also, there shouldn't be highlights in the water behind the rocks, the light wouldn't hit it as directly as you've portrayed.
Also, an the anatomy. the legs bend way too much, the front legs' upper "half" and bottom "half" are close to the same size. Th also bend backwards, a feat not possible due the joints. The rear legs look fine, just a little bendy. The tail is an extension of the spine, here it appears to be coming out of the butt, and connecting on the far thigh. And it's much to fluffy. You should be able to see both ears, and they aren't that big. Your anatomy says feline, so the ears should be relatively small and your bottom jaw should not connect to the spine.
Hope this helped !! You've really improved, and I hope to see more art from you. u w u