Save this brush made by me to your computer.
Now go to your Program Files folder and open up the one that should say Photofiltre. Now go to Masks and drag and drop the bubbles brush into that folder.
Now open Photofiltre and open up a new file.
Now click the Photo Masque tool then click the folder icon next to the name of the brush/mask and find the brush you just put into the Mask folder and set your settings to whatever you want and you’re done!