Kids Blocks

I selected the red rectangle using the rectangular marquee tool and used the Hue/Sat. adjustment to change the color to orange.

Wedding People

I created a new layer and filled it white. Used Elliptical Marquee tool with a 20px feather to cut out border for image.

Paris at Night

Used Elliptical Marquee tool to copy and paste the Moon to Paris background.

Happy White People

I used a white layer, the elliptical marquee tool, and a Gaussian blur filter to create this effect.

Shaking Hands for Houston

I used the lasso tool to cut out the shaking hands and pasted it to the Houston skyline photo.