DO NOT take inspiration from others' personal statements. I typed my personal statement literally in about 20 minutes (I had to - it was last minute) but it turned out okay because I wrote a PERSONAL statement, not a GENERAL statement! I got offers from King's, Queen Mary, Brunell & Kent even though my application was submitted on the 30th June at 4pm.
I've seen a few personal statements and it seems a lot of students think it's about writing a novel about a student who came from nothing to being something or was a gift from birth and came to save the world - those cliches will not make you stand out.
A personal statement should do what it says on the tin. At the same time, use your GCSE English skills to keep away from waffling, and structure the paragraphs well, keep the first sentence of each paragraph as an opener to the rest of the paragraph and the last sentence of the paragraph as a hint to the next paragraph. Every sentence should have a clear point to be made and every claim should be backed up.
Please don't write a general statement, or a personal essay. It tells me that you haven't developed to a high maturity yet so I wonder what it tells the admissions tutors who have to read through thousands of them each year.
Good luck.