This is quite an arresting vision of Anbu Kakashi and I applaud your bold interpretation of him in this portrait. There is a great intensity of expression on his face that makes me relieved that I am not the one he is looking at. I really like that the piece is largely monochromatic with the only exception of color being the muted skin tones and the red of his tattoo and sharingan eye. Quite evocative of a life that is largely lived in a black and white world of kill or be killed...finish the mission or die trying.
It appears that the water is clear enough to reveal his lower body beneath the surface. That large area of the foreground I feel flattens out the overall image somewhat and is a bit too blurry to fit well with the rest of the picture. I would have cropped the pic to just above the top of what seems to be his white belt in order to tighten up the whole composition...but that's just me
Thank you for sharing this unique vision of one of my favorite manga characters. It is refreshing to see a Kakashi cosplay portraying the character in a believable setting functioning in a way that is entirely consistent with his ninja lifestyle rather that the usual static, stiffly posed portrait. Kudos to you Ill just have to add this image to my favs