1. Get the app PhotoGrid.
It should be the first thing to pop up. The name is Photo Grid-Collage Maker and it's free!
2. open it up and press the button that says H&W HD
3. Now choose your photos
I chose four photos because that's what any average photo strip would have.
You can now choose many options for your photo strip. You can switch the positions of the photos and add cool backgrounds.
4. Save it with the green button at the top right.
You can now email it to yourself to be printed (printing on cardstock is the best choice) or there are ways to print it straight from your smartphone.
Now that you've printed them, you can cut them out and use them for whatever you want!