Note: Older versions of PSP can use File> Export to Animation Shop. That command does not exist in PSP X.
If you checked "Keep layers as separate frames" in Step 2, your PSP image layers are now individual frames in a filmstrip.
First we need to change display time to match the display time used in original. You wrote that down in step 2, right? ;-) Click Edit > Select All to select all frames and then click Animation > Frame Properties. In the dialog box, change display time to the same number used in original glitter pattern tile.
Preview the glitter effect by selecting View > Animation (or the 'filmstrip' button on the toolbar).
Close preview window. Change the display time again if you're not satisfied with effect. Experiment.


