Oh this is a really good render!
The water looks really really cold
Very nice choice of watercolour and good reflectionsettings.
The Alpine-fractal looks nice, though there are some very spiky areas.
Perhaps you've done additional displacements with high colour/displacement roughness and/or high spike limiting? If so, you might try reducing them.
Clouds and lighting are looking good as well. Only thing about the clouds/atmo is the quality.
I see you've rendered at 4000x2200, perhaps it'd be better to render it at a far lower resolution and to double the atmo/clouds samples to get rid of the grain.
Last thing is the composition: I'd raise the camera so the water would be covering about 1/3 of the image. This will look a lot more interesting.
Don't know if this is the final version, if not...I'm looking forward to see it
Keep it up!
Regards,
Martin
