The personal essay or personal statement are not too dissimilar from an admission essay. The features of your character or life experiences most suited to the job being applied for should be highlighted.
You must provide the reader with sufficient information about you as an applicant to ensure a choice can be made on the merits of your application and suitability for the job or place. The most suitable way to present an essay of this type is to organise your ideas after brainstorming some of your best and most suitable features about yourself that suit the vacancy applied for. Hobbies, interests, sports achievements, book interests all help to provide an overview of you as a potential employee or student.
Basically, the main aim of a personal essay is to give you an added opportunity to showcase yourself in an essay form that should be spelling, grammar and punctuation perfect.