Currently living in my new Dr. Martens Lite--my fave shade of tan :)
Looks like I watercolored on the floor, but these are actually just a bunch of effects done with some FREE photo editing apps on my phone.
All of these effects can easily be done on Photoshop on a laptop/computer, but for the times when I'm mobile, here are the apps that I use when I want to play with photo effects and overlays:
MagicEraser, Patternator, Pic Collage, and Piclay
I started with this muddy painting I created a couple of weeks ago.
Using the MagicEraser app, removed the background color, and saved the image as .PNG (transparent background)
I did the same for my shoe-selfie :P
Wasn't so OC when it came to removing the background bits, because I want to layer this on top of the edited photo later.
Opened the transparent image on the Patternator app. Played with the type of repeat pattern, and the scale. When you're happy with how it looks, save your pattern.
Using the Piclay app, blend the original shoe-selfie photo and the pattern with the overlay effect.
Save the photo. (Don't worry about the pattern covering the shoes!)
With the Pic Collage app, layer the previously saved photo with the photo of the shoes without the background (in step 1).
Adjust to align perfectly with the photo underneath.
Lastly, edit / tune image the photo's brightness, contrast, highlights, etc on Snapseed by Google :)
It does take quite a number of steps, but editing photo overlays are possible on the phone!;)