First Photo: I opened this photo in Photoshop and used the Replacement Color Brush tool to change the color of the umbrella from blue to green.
Second photo: For the picture of my friend Baxter, I used the sharpening tool to bring our his eyes. Then I used the burn and dodge tools to brighten the eyes and define his jaw line. I also applied a blurred filter mask and the brush tool to give his skin a smoother texture.