The composition is good on this photo. The viewer's main attention is tightly focused on the subject and the objects surrounding her. However it does suffer from lack of sharp focus on the bubbles and on the subjects face. While the girl is mostly in focus the bubbles in the forefront are not. The bubbles have a very fuzzy and soft look to them and while that may add to the dreamy aspect to it, I still think it could have been better if it was more sharply in focus. And admittingly bubbles are not an easy subject to capture. Not knowing what camera you are working with I am limited to dispensing broad advice : if you have a camera where you can set the aperature I would recommend the highest you can set it (the higher the number the less 'light' is let in through the 'lens'). Why close down the aperature to let less light in? The reason is that it gives a greater depth of field to the shot not to mention greatly enhances the sharpness of the foreground and background of the shot. So that even thought the focus may be centered on the model the bubbles in the foreground would be in sharp focus too. Hope this helps.