It must be written with special ink on special parchment in Hebrew and there must be no mistakes or it is invalid and must be buried.
A Mezuzah must contain in Hebrew, in a special alphabet, the following two chapters: Deuteronomy 6:4-9, and Deuteronomy 11:13-21. Anything else, or anything more or less is completely unacceptable.
On the back of the parchment is the Hebrew word 'shaddai,' or a Hebrew letter “shin” one of the mystical names for the Almighty. Shaddai is also an acronym in Hebrew for Shomer Daltot Yisrael, which means Guardian of the Gates of Israel.
A mezuzah must be attached on the upper third of the right-hand side of the doorway as one enters, no less than one hand-breadth from the top. A blessing precedes the hanging.
It is to be hung on the inside right door post on a slant pointing inward to the room you are entering and it is said that you should touch it or kiss it each time you go out or in. It is set in place as a reminder of Abba’s words to us, to remember Him.
Having just described "kosher Mezuzah ettiquette" I will tell you that we do not seek to be kosher in light of rabinic tradition. We simply desire to honor Abba's words as He has given them to us. Plainly and simply out of a heart to please and honor him because He is our Heavenly Father. So to have a Mezuzah or not to have a Mezuzah is up to you. I don't feel you must own one in order to honor this commandment. We are simply instructed to write them on our doorposts. I believe each would be acceptable if done in faith that His word is true.
Now back to what we've done:) Here’s a picture of the Mezuzahs the boys and I made a while back beside the brass Mezuzah given to us.
The ones we made are made of Sculpey clay and I got the idea here: http://www.chadiscrafts.com/fun/claymezuzah.html This is a fun site with lots of creative ideas for little kids and adults. These were our first attempts and I think that once we got the hang of working with the clay we could do better. Making our own Mezuzah gives the kids a chance to put Abba’s instructions to work in their own lives and teaches them that every word spoke by Him matters.
Here’s another picture of what we did on the windows surrounding our doorposts.
I love to see them there by my door posts because it is a reminder to me several times each day of the strength of Abba’s power and promises that endure for all generations.
I am open for learning in this matter. However you are able to honor Abba's instructions to write His commandments on your door posts, I hope that His words are inscribed upon your hearts above all else.