can you provide the photo too... i like the painting a lot... I can tell Van Gogh has influenced you in way. I actually like the fact that the Box is the focal point and not the flowers. too often is in such paintings, the merit of beauty is put on the the florals rather than the whole painting / composition as a whole. As for any suggestions, soften the shadow tones so they are not so hard lined. hard lines in your painting are applied to the stone work, thus should not be applied to light or lack there of.