Then look at some resources for writing personal statements and get some advice. There are lots of websites which will offer you advice for writing a personal statement but it is best to look at websites from reputable organisations such as UCAS or student advice websites which are well used such as The Student Room. Remember to ask your teachers, friends and family for advice. A good question to ask them is "what do you think makes me different from other people? or "how would you describe me?" because the answers often give you some interesting information that you hadn't thought about. The personal statement is not something you can write quickly so be prepared to think a lot about yourself, your qualities, skills, experience, likes and dislikes. You are unlikely to meet the people who read it so your personality needs to come though on paper; this is difficult.
Another problem often discovered at this stage is the presence of too many short sentences and paragraphs that seem choppy and abrupt. As a solution, try to develop these into longer, more graceful sentences. Formal writing generally utilizes longer sentences, so try using more compound and complex sentences. Using long sentences add flavor and variety to your writing, not to mention the fact that it also showcases your proficiency with words. You can also consider the word_count limit at this time and begin omitting unnecessary details that may only bog down your essay and make it unfocused. How can information be "condensed" while keeping the essence and maintaining the relevance of the essay? You can remove adverbs and excessive modifiers, as well as transform detailed sections to general statements.