I supervised a free make and take mask workshop on Saturday morning at the Your Maine Stamper Halloween Bash! Here are the samples I made. (I apologize for the yucky colors--something is definitely wrong with my camera! Anything pink is dark red, the yellows should be oranges, navy blue is black. I think the battery is dying.)
I found all of the templates free online--just Google "Halloween mask templates". Print out your template, cut it out, and trace it on a subtle printed paper. Select the stamps you want to use, ink them up with VersaFine Jet Black ink, and dust them with clear embossing powder. Heat to set the images. I added some color with Memento markers (moons, pumpkin, spider bodies, chairseat, etc.) You can even get fancier with decorating the masks depending on what you have to work with--feathers, sequins, glitter glue, rhinestones, flowers, whatever! I plan to use some Glossy Accents on the spider bodies to make them more 3-D. I mounted all of my masks on black paper and plan to use them as wall decor or I may incorporate them into a banner to string around a window.