#4 Your interview is tomorrow and you really want this job.  How can you make the most of the time you’ll have to talk to the person who may be your future boss? Here are some tips on how to prepare for the Big Day before you head out the door . Greet your interviewer appropriately with warmth and confidence. Studies show that within 30 seconds, you will leave a lasting first impression on the person, Make the most of that half minute by being mentally prepared.