It is nice looking. I think you will do better to split the stem plants up a bit and plant each stem separately rather than the whole bunch in one plug. I know they sell them as "bunch plants", but they should not be planted that way. So sprinkle them around a bit so it does not look like you bought plants and plopped them right in as they came. Create a little forest or wall with the anachris and let the light get down to each stem's base; they will thank you for it.
Have the taller plants in back and shorter ones in front. Also like Tom said by separate the anarcharis into individual pieces will help get the light to the whole plant instead of just the tops and will make the tank look better than having them all bunched up.