Try not to go off on tangents. Keep your focus on your best qualities.
Don't be scared to admit you don't know the answer to a question. Don't lie.
Eat a healthy breakfast on the day - don't eat spicy foods!
Keep wording professional at all times.
Take time with your answers. Don't feel pressure to answer quick fire.
Study popular interview questions, preparing your responses. Test yourself before with a few practice questions.
Set up a Google Alert about the company to keep informed.
Job Hunting Tips:
"Finding a suitable job is a job in itself. Arrange a plan of action and carry it out. Don’t just spend a hour or two a day and then give up. No business could stay in business if it were only open for a couple of hours a day. Think of it as a job."