I think they are neat concepts. The second one doesn't really do it for me. I really like the third one, but I agree with Live Free that the light needs to be cropped out. First one is an interesting look at a water fountain, and if you carry the eye for different perspectives, it will help you immensely.
The second one doesn't really do it for me. Did you use the pop-up flash? The shadows are a little harsh, and may not be what you were going for.
Good beginning! :thumbup: