First download the app phonto from the app store
Then go to google to pick out a background
Type blank backgrounds on Google
Go to images and pick out a background that you like
Click view image
Hold the picture to save
Press save image
Type a character from tv or just a regular image also make sure to type png
Go to images and pick out your favorite
Pick out an image that has kind of a checkered back ground
Save the picture
Go to phonto and you will see this
Tap on the little camera on the bottom of the screen and tap on your blank background
Choose your background and place it on the screen
Press on the three lines on the bottom left corner press add image
Choose the symbols you want
Choose the size you want or just rotate it
Make it the size you want it to be
Add a text by clicking the place you want it to be
Type what you want
Place it
Choose the size
Pick your color
Go to font and choose your favorite one
Add your name so people know that you do it
Choose the font you want
Look at it for any mistakes
Save the image
And enjoy your own custom wallpaper