Some brief writing tips: Be clear.
For example, begin with who you are, and why you are applying. The authorities can anytime crosscheck your details, and if some false information is found, stringent action would be taken. This guide for Adobe printables can be of assistance if you need help accessing the documents.
Then what it is about the course and college you like the most. Does it make you feel excited about your course? But, the format followed by most universities is the same. What hobbies do you have? Write a first draft using the format your school requires.