Don't save you'r work with the file extencion .JPEG/.JPG, but save it with file extencion: .BMP or .PNG it will have a lot of more quality. Look at my Siggy that's a .PNG saved file
ok for Paint shop pro got to Adjust> add/remove noise>add noise. once you go there a box will pop up. click gaussian then save> uniform then save> random then save. As you save them name then cause you gonna use animation shop then you gonna have you glitter effect.