In some ways you are very lucky because your experience of high school, hobbies and life experience will already be different from many UK/ home students so you should take advantage of this in your personal statement. But you also need to make 2 things very clear. Firstly, why do you want to study in the UK and secondly, you need to show that your English is of a good standard (usually IELTS 6ǌ or above). It is no good having IELTS 6Ǒ if you personal statement is full of grammar and spelling mistakes. But DO NOT pay for someone to write your personal statement for you on one of the many websites offering this service. If you have IELTS 6Ǒ, you do not have perfect native speaker style English and universities may reject your application if they suspect it is not your writing.
When you choose someone to look over your admission essay, you should choose someone who will not be afraid to tell you like it is. In other words, don't just show it to your mom or your significant other. When you show it to someone who isn't afraid to give you criticisms then you are doing yourself a giant favor. Remember, those who review it when you turn it in will be looking not only for the good, but the bad as well. If your statement is not among the good, then it will get weeded out with the rest of the bad.