Meet me in St. Louieby
lcfourstarComment by CEJ: Hello from the Critique Club!
I have studied your image and have the following to offer:
Composition/perspective - looking at this I get the sense that location is key for this image. The bit of wall at the bottom left is a slight distraction and could have been cropped out. The reflection would have been stronger if the whole arch was visible. If this was not possible, cropping more off the bottom so the arch is not 'almost' complete would help it. A 'perspective' crop may have helped in this area if the arch reflection can be seen as complete. The arch itself is a strong enough element without the reflection. The dicks are a nice added feature to the scene. They help to break up the expanse of water but on the other side, they disrupt the reflection. Again, a different crop would help to place the interests in the right place and keep things from becoming distractions. Overall it is a very serene scene.
Color - the color of the sky against the arch is nice - not too dark. The acrh is not lost in a gray sky and the added spot of blue helps to accent the apex. The trees seem to contain a lot of colors, but they are muted or dull. Some contrast and saturation adjustments may have helped to bring those out more. The water is so dark the color would have helped to offset that.
Lighting - natural, no flares or glares or washed out areas. The sky is not blown out at all. In the brightest area of the arch the seam detail is still visible. Good choice of time of day and control of natural light with your camera.
Challenge requirements - in my opinion, I find this borderline. It is a beautiful scene that in the broadest sense meets the requirements. However, the arch being such a strong element and occupying the bulk of the scene, the water is not enough to offset that which leaves this closer to a subject photo than a landscape.
Overall/my opinion - this is a really wonderful scene that could be a lot stronger with a slightly different crop and some work on the colors. The image seems a little dark although it is daylight. This may be the water. Although the overall reflection is there, the colors even in the reflections are dull. Post processing is the key for this image.