The whole artwork is really interesting. The photo manipulation is very well done so you deserve 4.5 stars for Technique, although it is not a full "5 stars" because there are some details, like the black stripes near the eye and the yellow cross above the nose, which should have been placed in a better and more accurate way (just tilt them more, for example).
Vision: 4.5. It still reflects a precise idea of rendering a Pokémon as a real life animal and this is a very appreciated feature by many people (including who is writing right now!), while Originality gets 4 stars because I've already seen many other sharks turned into a Sharpedo. Please, don't feel offended!
Impact: 4. I personally like the artwork and I LOVE real life Pokémon but the whole point of view is a bit too dark, without giving the perception of the presence of water and you could have used the other shark to make a Mantine due to its shape showed in the photo.