I think the form and depth of the water is fine. It depends on light of course, but I would suggest incorporating more teal and green into drawing water. I also think it would profit a lot from drawing foam more like clouds of particles and as streaks between peaks and also add water droplets flying in the air. I edited part of his garment to give an idea what I mean.
Oh my god! Thank you so much. You save my life! I really need this!
Haha, glad to be of help!

