Step-by-step: How to Create collage:

1 - Open an image for background of your collage: Menu - File - Open Main Image... If you like a plain colour background you may omit image opening and simply set background color at Background Setup screen. (Also you may use New Project option from File menu)

2 - Add Tile Layers selecting from menu Layers - Add Layers...

3 - When you will see your image with layers in the main program screen fill layers from folder with images.

4 - You may place custom images into layers by simple dragging and dropping images from Finder.

5 - When images are embedded into layers select from Menu - File - Save project. This will save your collage as Photo Jumble project.

Now you're ready to export collage to image file (See Next Step).