* One ceramic tile, any size/color (I use the 11.5" x 11.5" size). Get these cheap at Home Depot; bathroom/kitchen tiles. Get the plain white, or with a design on it.

* Acrylic paint in two contrasting colors (such as silver and black), and a few small paintbrushes.

* Clear acrylic sealer in a spray can . It comes in GLOSS or MATTE.

* White graphite paper if your background is going to be DARK; otherwise, get BLACK graphite paper.

* Self-adhesive felt pads.

If you're going to paint a color background on the tile, do this first and let the paint dry completely. Put on a couple of extra coats; allow one hour drying time between coats.

Get a good picture of a pentagram, in a size slightly smaller than your tile. Grab one off the web and use a program to change the size you want then print it out.

Position the graphite paper CAREFULLY onto the now-painted tile. Position the pentagram printout CAREFULLY on top of it, in the position where you want it to end up on the tile.

Tape everything into position (don't let the tape touch the painted surface!), or clamp it down. Then, using a stylus or a ballpoint pen, "trace" over the lines of the pentagram. This will leave an impression on the face of the tile itself.

Remove all paper. You now have a faint line-image of your pentagram.

Using a small paintbrush, fill in the lines - paint the pentagram itself. If the pentagram itself is a LIGHT color (such as silver) and you're painting on a DARK background, you'll need at least two coats.

After all coats of paint have dried thoroughly, spray on the sealer.

Decorate further according to your own artistic flair. Attach the felt backing so that the tile won't scratch your altar. Alternatively, you could attach a hook so that the tile could be hung on a wall.