The splashes are great! I don't have anything like that in my gallery ... nice work! Looks like they required a lot of patience...?
Rocky Waterfall: Do you have a tripod? I'm guessing you either used a 'pod or an IS lens, because I wouldn't be able to hand hold something that sharp for 1/15 second. But I'd use a longer exposure ... most waterfall tutorials will tell you to aim for the 1/4 sec ballpark, but I personally try to leave the shutter open for a second or longer. Use 100 ASA, or 50 if your camera supports it - if so, play with this setting a while first - to get away with a slower shutter speed. The really small plume at the top looks great; a longer exposure would have the whole frame look more like that.
Marble Sunset: The composition here is great. I'm not sure if those are clouds or the top of a large wave at the bottom, but it anchors the scene.
The
Prairie Dog Posing is great. The composition in particular is nice, with the tail coming up diagonally from the corner, and the head leaning off center. You might want to open the lens a little more for a shot like this, though; people expect wildlife photography to have out of focus backgrounds.
I'm a sucker for reflection photography, like in your
Series of Stones. Have you tried that one in black and white, or sepia?
A lot of your landscape style beach shots have slightly out of focus foregrounds. Opposite from wildlife, you almost want infinite depth of field for landscapes. It gives them a sense of depth, being able to show both something close enough to reach out and touch, and something impossibly large and far away, like the ocean.
This isn't a great photo, but notice how the foreground leads you in. That would be my best advice, I think, after looking at your gallery. And nice work, by the way.
