1. Structure _ If you can't write a personal statement which has logical ordering and structuring, then how are you meant to write a good essay? Or construct a good argument? It won't look good for your legal career. Plan your personal statement; don't just start writing it. Have clear beginning where you talk about why law interests you. Then go on to describe why you would be good at law. Include work experience and extra curricular activities here too. Next should be a section on your academics or other (relevant) qualifications (even if it's non official qualifications, like a first aid course). Then talk about the future. This could be your end career goal, or what you're looking forward to at university. Good foresight, as mentioned above, is an attribute law schools will look for. Lastly conclude your legal personal statement; try and encompass the main themes of your statement. If you want to become a barrister for example state how you can't wait to get started by joining the debate club. Say something optimistic, but not arrogant or over confident. _ Remember these are just examples of how you would set out a personal statement. It doesn't need to be structured the same way _ it just needs to be logical.
10. Use poor spelling or poor grammar _ This one should be pretty obvious. Academics on admissions committees are generally high achievers with high standards who won't disregard even simple typos. If your personal statement is not technically perfect, it can make you seem sloppy, lazy, or inattentive, which are not qualities anyone wants in a future colleague. Remember that the people skimming your essay are seeking a reason to reject your application and make the pile of possible admits smaller. Always get someone with strong writing skills to review your essay.