What lens were you using? It looks like a zoom? I really like the first one, although the subject placement is a little to central for my tastes. #2 is nice, but I feel like there is too much that is OoF, which is a shame as the drops of the one swan's beak would have been interesting. #3 is also nice, but a shallower DoF might have worked better with a more definite focus point.
Keep experimenting! You can only get get good pictures with a lens if you experiment with it. I've found that out with my new 75-300mm.