Something about the background material's color doesn't work for me, but I can say I can think of a different color to suggest that might have worked better.
What a lovely flower arrangement. The composition seems a bit static to me--Iwonder if putting the lamp on a box (under the drape) to raise it higher, and moving it slightly behind the edge of the arrangement of flowers would have helped. It also might help to have a more massive, and taller lamp. Having both items make a fairly straight line across the bottom is what makes the static quality. Colors are lovely. A 5 that could be improved, I think.
Nice colours and textures. To improve this pic, you could have aimed to have stronger directional light - so that a definite shadow was visible. Not all objects in the still life should be lit equally.
This is plain and sample, but everything works well together. The way you created extra texture with your background helps balance the detail in your subject.