Hi Coconut...welcome to Still Life.
Good choice to base your picture on...palette is pretty close, but you need to be bolder with your BG...as the photo shows the vase's shape very well because of the different values....whereas you've defined it with a line...which doesn't really exist, except in our minds!
I never see the obvious somehow until I have committed my work to upload and then see it onscreen....when it just hits me what is needed!
I would suggest you keep working on this - it will be worth it!
