Can I prepare my own Will?

There is no requirement that a Solicitor draft your Will. However, drafting your Will yourself is not advisable.
There have been many cases where homemade Wills were deemed invalid or unclear and many of these cases ended up in the Court system for years, causing distress and financial hardship to the family of the deceased.
A Solicitor will not only follow your instructions, they will also offer advice on how to structure the document so as to ensure your Will is both legally valid and satisfies your requirements.