(please take this as guideline only)
first, mention the main reason for choosing the award/course, about the country you choose, i.e why UK, USA, Canada.
write about the knowledge, skills and positions of responsibility you have obtained through your work and/or education (whether paid, voluntary or domestic) which might be relevant to the award/course, you can mention your academic achievement, can write about your family background in short.
the work experiences and/or personal developments which have been most important to you and the challenges facing you in your studies, work or personal career development, you can write about how this study/subject area will help you to develop your career.
last but not the least,
your future career plans.