I am a big fan of vignettes, I have them everywhere. I find the easiest way to do them is to take all your decor items away and put them in one spot and the plan where your vignette wil be and add one focal object and then its support items. A bit like a leading actress and its support actresses

mix up the support rolls with hard, soft, short and tall and dark and light.
You can use covered books ( use fabrics or paper) to add the colour and height you need. Use cups, flowers and ornaments. Put a placemat inside a vase if you need solid colour.......and don't be afraid to take away from the group and put some items away for a rest. Not everything has to be out all the time. Its nice to give some of your items a rest and then when you bring them back out they seem new again. Great article JA,