By request for Suzanne. This is gonna be a crude how to from my phone since I’m 400 miles from my mac. Bare with me :).
First, I chose an unedited selfie I took of myself on a mountain a few days ago.
I only wanted my face from the selfie, so I opened up PS Touch and used scribble select to make a selection of my face. Use green on the areas you want to select and red for what you don’t want. You’ll want to do a better job than below. That’s just for illustrative purposes.
After it makes a selection, you can keep using green and red to fine tune the selection. Next, I used refine edge to get an even better selection.
I deleted the bottom layer and saved my extracted head by itself. It’s not perfect, but it didn’t matter in this case.
You can try to blend images in PS touch, but I like imageblender better. Load the face and tree pics in imageblender, slide the slider all the way to the right (tree pic,) and set the blend mode to screen. Next, use the move tool to rearrange the tree until you find something you like. Now, you use the masking tools to erase part of the tree image on the face. It’s important to use the soft brush for a better blend. The hard brush is the solid circle, while the soft brush looks blurred. In this instance, with the blend mode set to screen, the tree won’t show up on the white background, so you don’t have to mask it out.
Next, I cropped tighter in Snapseed to get a composition I liked.