Step-by-step: How to Create mosaic:

1 - Menu - File - Open Mazaika Library...(If the Library is already open - you may omit this step).

2 - Menu - File - Open Main Image... Find an image you want to mosaic and open it.

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

4 - When you will see your image with layers in the main program screen press Render All button.

5 - When image will be mosaiced select from Menu - File - Save project. This will save rendered Photo Jumble project.

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