It is a strong sop of
- you convince the evaluators about your credentials
-it contains data which is totally related to the course you are going to apply
-you use correct format, fonts, no.of words (500 to 600), mine was of 800 words
-you should sound a professional who is aware of his achievements, what he can achieve and outcomes of yourse course in real world after the completion
If you are applying for technical course, write about present technical scenario and how you can benefit yourself out of it.
Be precise and accurate , don't waiste paragraphs on writing cgpas you got from 10th to masters
Best of luck