Don't stress yourself by thinking about negatives.
Interact, perhaps, on the firm's social accounts - perhaps make a comment.
Don't just go over your CV. An interview is a chance to show all of your qualities that a CV can't present.
Make sure your latest twitter posts are positive.
Learn about the employer, owner, and their history.
Do not speak ill of former workmates, bosses or sector.
Don't forget your body language such as making good eye contact, your posture, not fidgeting and not mumbling.
Job Hunting Tips:
"Finding a new job is a job in itself. Build 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 continue to operate if it were only open for a couple of hours a day. Think of it as a job."