This is an easy one. just add pictures to paint, size them how you want them to be! heres one of mine
Step 1: Topic
Find a specific topic you like...oviousley you can see what mine is.
Step 2: Idea
Get a bunch of pictures and load onto paint
Step 3: Customize
Then size and place them where you want. You don't have to place all the pictures so there isn't any white. I just wanted to.
Step 4: Just Weird!!
You can make you pictures look funny by inverting them...and all sorts of stuff.