Pushing materials

I create an Overlay layer, and I use white and black to make certain materials more reflective and mute others. To achieve the water effect I select all, press Shift+ Cmd> C and then Cmd+V. Then I flip the image vertically and add a motion blur to soften the reflection. It’s important to pay attention to how materials ‘meet’ each other, such as the water lapping against the muddy shore.