I like it :D The only thing that I would suggest is making the surface of the ice a bit less smooth, and the edge of the water against the iceberg, again, a bit less level. Other than that, it's awesome. The reflection is great, and the shadow. Great job
Strange, I find myself enjoying terragen in your gallery. There are touches of realism in your images I really like. The edge of the next berg to the right as if you couldn't quite crop it out of the "Photo" and the clouds kept low in the cold, clear sky.