Employers interpret your attitude and interest in the job vacancy and in their company through your body language, just as they do from your smile and your words. Sit up straight and plant your feet firmly on the floor during an interview. You may think that a relaxed pose will show your confidence, but it shows, instead, a lack of respect or interest. Don't sit with both hands in your lap beneath the table--you will look like a nervous child. Rest an arm on the arm of your chair or on the table.