Nokia Lumia 521 - How do I combine images in Creative Studio collage?

You can combine images into a collage in Creative Studio by first selecting an image and then tapping the edit (pen) icon > swipe to play > select collage > select another image.

You can add more than two images to the collage by tapping the + sign on the menu.

When your collage is complete, you can finish it by tapping the check icon. After that you can save it by tapping the save icon.