Qual seria o problema técnico?

Apart from the correct and wise answers of the classmates, let me give you another opinion and advice. It is about lighting, when you illuminate glass you must do it by placing spotlights and lights in such a way that the contours of the glass object are defined or use a background that contrasts them enough, when you take a still life photo you should look for the best combination of light, I always say it in a photo, the handling of the camera is 50%, the other 50% is knowing how to use the lights, the lighting