IMO, I would remove the figurine thing you have going, and add the piece of wood. Sporadically lay out the small stone pieces, not in a fashion that looks like layed cobble stone. - It will help with gettinng your scene a little more natural.
Also, get a few more plants, like a fair few more, as I didnt really notice much difference in the over all scheme of things. A few more chnages and I think you will be wqell underway!