This looks a little unprofessional i really didnt want to know it was a sheet and the lighting is a little weak. Maybe if it was cropped without the bottom corner of the table showing the wrinkles in the sheets wouldnt bother me as much.
I would recommend you iron the cloth if you're using it as background. Try cropping the vase out, the flowers and the stems look beautiful against the darker purple. 7
This is a nice shot and there is really nothing wrong with it, but it is lacking creativity. Something could help it such as a different subject or perspective.
I love the feel of the flowers, lighting and the colors, but I have a few distractions which are the wrinkles in the sheet and the corner of the table. I would also have liked to see a different colored vase. This may sound like an awful lot of nit-picking, but I would hope that you may reshoot it as it could be an outstanding shot.