Hi Miguel, I really like this photo because (for me) it's unusual and creative. I like the color in the shadow. The one thing I'm not sure about (but it's your artistic choice!) is the 'straight line' at the bottom of the top shape at this position. Yes it does provide contrast with the 'organic' lines but IMHO the separation between the top shape and the glass object make it less effective. Perhaps an overlap? Perhaps less straight?

You're the artist, I'm sure you can figure it out :).

Best wishes,

Mike