Photoshop is a great way to enhance to look of pictures, as shown below, I used curves to adjust the brightness of the pictures and vibrance to adjust the color and make it stand out more. I used some mosaic tile effects and and sponge effects.

-sponge

-vibrance

-ripple

-ripple

-vibrance

-curves

-sharpen

-vibrance

-curves

-sharpen

-vibrance

-curves

-Texture

-craquelure

-vibrance

-curves

-texture

-grain