A will is a set of instructions that explains how you want your property distributed after your death. In Oregon, you must be at least 18 years old and of sound mind to make a will. If you are married, you can make a will before you turn 18 years old. Your will must be in writing and must be signed by you and at least two witnesses. The witnesses must also have seen each other witness your will. It is important to make sure these requirements are carefully observed.