More Underwater Photos!

At this point I am just trying to get used to using this underwater rig. I have an underwater enclosure that is meant for a conventional film camera but I have fashioned it for use with a Nikon D3000. Seems to work just fine. However, I can only use one button and that is the one for the shutter release. I cannot make any adjustments unless I get out of the water, take the case apart, make the needed adjustment and then put it back together again. At least it's digital!
As for what I am photographing, I have built in models with my kids. When they are willing! I want to be able to exploit the beauty of motion and flow under the water. Hair does well. So would materials of some sorts. Silks and light weight fabrics. I want to show that it is underwater but not have the "pool" in the background. Lane lines, tiles and other matter such as drain covers really detract from the overall look and feel that I am striving to achieve. Eventually I want to place a large backdrop into the pool and light scenes from above. Outside the pool. For most of these I had a flash on the camera and had to either aim it down or away in order to not blow-out the subject matter. It is true that in order to create something that is dramatic and dynamic, you have to light the image underwater with a strobe. This will prove to be a challenge later on when I introduce outside strobes. One other thing that I have noticed, of which I like very much, and that is the composition with the top of the water and the way it reflects. This means that I have to be at the bottom and the subject has to be at the top. Still trying to figure out how this will work. Anyhow, here are a couple of examples. Please give me some feedback!