Updated: 

Masks are a recent feature of Paint Shop Pro, and are a bit confusing to learn. Check out these links to make it easier:

Masks

   * 10 pages of Masks to Download

   * Chay's Edges

   * Lori's Masks to download

   * Nut's Nook Masks

   * Pastiche's Masks

   * Traveler's Masks to Download
 

Making Masks

   * Advanced Masks Made Simple

   * Mask Basics

   * Creating and Using Masks

   * Creating and Using Masks

   * Creating Masks

   * Creating Masks

   * Creating Speciality Masks

   * Converting Edges to Psp Masks

   * Introduction to Masks

   * Introduction to Masks ~ Covers the Basics

   * Magic of Masks

   * Make a Mask From an Image

   * Making Masks from Graphics

   * Mask Tutorial from Web Graphics on a Budget

   * Masks Made Easy

   * Masks Tutorial

   * Psp Foundry Mask Tutorials, Creating A Mask:

   * From a Selection
   * From an Image
   * From Scratch

   * Using Masks

   * You CAN understand Masks with Layers
 

Using Masks

   * 3-D Tubes with Masks

   * Basket Mask Frame

   * Fading Image Edges Using Masks

   * Folk Mask Border

   * Have Fun Using Masks

   * Heart and Dove Mask Tutorial

   * Jade Text with Masks

   * Jaggie-free Oval Frames using Masks

   * Making Art Deco Effects ~ Using an Image as a Mask

   * Mask Basics

   * Mask Basics by DLan

   * Masks Made Simple

   * Photographic Edges using Masks

   * Raindow Effects

   * Stained Glass with Masks

   * Texture Mask

   * Tiger in a Wineglass Using Masks

   * Torn Paper

   * Tracing Outlines using Masks

   * Traveler's Mask Tutorial

   * Using a Mask on an Image

   * Using Masks

   * Using Masks

   * Using Speciality Masks

   * Working with Masks