To answer the first part of your question- there are two types of valid wills in Louisiana- OLOGRAPHIC and NOTARIAL. According to the Louisiana Civil Code, an olographic will is one that is written, signed and dated ENTIRELY in the handwriting of the person making the will. This type of will may be notarized but does not have to be.
There are many problems that can arise with an olographic will that can cause the will or parts of the will to be invalid. The most common problem is that the will is not written in the proper form under the law. This can be dating issues, improper signatures, or the lack of proper language used to designate the document as a will. Another common problem arises when a person uses a “will form” that contains some typed information. Often, the typed portions of the will be invalidated because those segments were not “handwritten” as required.
The second type of will is notarial- meaning created by and/or signed by a notary and two witnesses. This type of will is usually created with the assistance of an attorney and is usually type-written except for the signatures. The notarial will also must follow the rules as to proper dating, signatures and form, to be valid.
To answer the second part of your question- Yes. You can draft your own will without assistance. But, because of the rules dictated by the Louisiana Civil Code and the possibility of the will or parts of the will possibly being invalidated, it would behoove you to seek legal advice. The fallout of an invalidated will cannot be undone if the testator is deceased. Therefore, the state, rather than you, will dictate how your estate will be distributed.