All you have to do is print it out and sign off at the end of the Will and at the bottom of every page and have your witnesses sign the same as well. Beneficiaries under the will and their spouses are prohibited from signing as witnesses. Remember, you must ensure that all signatures are witnessed in person by all parties (ie your two witnesses and yourself must all sign in the presence of one another at one sitting). Date the will immediately thereafter. You will then have a valid will!