One of the easiest ways to add depth to your photos is with texture overlays. You can find textures for free all over the Internet or purchase them. My favorite textures are from the Nostalgia pack from The Shoppe Designs.
Batch Editor
In Batch Editor, you have the ability to add texture overlays within a mix or as a stand alone. Personally, I add textures as part of my mixes; it makes my workflow faster.
In addition to the ability to add a texture, you can control the strength of a texture and also remove the texture from skin tones without changing the color tone.
See the before and after here.
// ZENDESK CODE