You have a nice composition, however there is a white balance issue. The image is too blue (cool). Also there is color fringing at the left edge of the citrus.
Another problem with the image is that is has excessive noise/grain. Please zoom to 100% to inspect for the issues I have outlined.
Improper lighting & too much noise. But I like the concept.
As this was taken with a smartphone, it is hard to get really good quality when enlarged. The pixels tend to show more. When this is enlarged the quality fails. You begin to see pixelation and noise:
So generally speaking smartphone pictures especially when taken in JPEG format tend not to do so well for a number of reasons.
Also, the specular highlights on the citrus are distracting.