First off a well done Misty cosplay. Pose is quite nice, and well thought of, as well as the choice of location. Very nice focus of the picture. Also, well done Staryou, which seems to be waterproof as well - making it possible to get some awesome water-shots as well. ^^ If I may add 1 detail, which is of course only minor, it would be that Staryou, as far as I know, does not have the yellow-thingies (whatever you'd like to call em) in between all of it's 5 corners/legs. There should only be 2, which would go around it's left "leg" (assuming each corner represents a leg, arm or the head, making it 2 legs, 2 arms and 1 head - this is all anatomically speaking of course). In other words the lower right leg/corner seen in this picture, pointing almost directly down/south.
Anyways, went too much into details
All in all a really well thought-out shot and cosplay, as well as an awesome Staryou prop ^^
If I were to give you grades, based on the Pokémon anime character Misty, I'd give you 9 out of 10 :3 Really well done cosplay and shot! :3