I think that this work is really one of you best work. The girl is well done and the "soap ball" gives the idea that she needs air. If your goal was to give a message as "I am feeling suffocate" you reached your intension.
- About the colours:
Girl -> the light violet of her skin remind me a "dead" body under the water.
Bubble -> you used more or less all the colours for it. They are well distributed in the space of the picture, nice balanced. You was able to use all the colours but it is not like an arlequine (and this is positive)
Background -> It is your sign, te white. Personally I like it, the only "negative" fact can be that to "kill" the reflacion effects of the bubble
- About the shape: It is a classical centered figure, with this bubble that gives to her a "jallyfish-like" shape who is, actually very interesting
- About the dimensions: I did not saw the original work so I can only imagine it, but I think that 1 m x 1.5 m is an important dimension, that can only enhance the beauty of the draw.
Generally I like it a lot.