My mother told me not to open the door, that there would be trouble. Had I minded her, I would not have discovered this monsterous, mysterious bubble. It lay there floating on the water, wanting, inviting attention. All I could do was stare in amazement from my point of detention. (nice work with combining all the elements)
I really like this idea, one of my top images. I can't decide about the texture in the sky, I would like to see what it looks like without it. Like she is coming out of a door in the sky. Right now the sky almost looks like a wall, but maybe that was your intention.