Reminds me of a style III iwagumi. I haven't seen many on here, so it is always refreshing to see.
I have a couple suggestions regarding the hardscape. I like it the way it is now, but it seems a bit linear. I had the same problem when working on my hardscape. You essentially have a line of the four smaller stones in the front, and then a line of the larger stones in the rear. Maybe try moving one of your three larger stones forward and grouping two of the small stones with it.
One other question that I have is what stone is supposed to be the focal point. I am thinking that you want the largest stone on the right to be the focal point, but I am having some trouble telling due to the three large stones being similar in how high they sit in the tank.