There are two ways to change your Will: prepare a new one or prepare a codicil. If there are many changes to make, it may be less confusing for the Executor to prepare a new Will. If you have only minor additions or deletions, a codicil, executed in the same formality as a Will, would be sufficient. Changing your Will by drawing lines through items, erasing, writing over or adding notations is improper and may destroy it as a legal document.