Many applicants stress themselves too much after the interview by recalling all the wrong answers they gave. Instead of remembering those negative things, think about the many things you did right which could actually be cues that you are about to be hired. Here are the signs that you've somehow impressed your interviewer. Were these questions asked to you?
1. "How long will it take you to move from your current workplace to assume the new role?" Often, when an interviewer asks for your availability to fill-in the position, she is interested in hiring you. She just wants to make sure that you are available by the time the company needs you.
2. "What is your expected salary?" If you have no chance to be hired, the interviewer will definitely not waste her time asking you how much your expected salary is. This is just her way to decide whether or not the new company could afford your rates.
3. "Are there items that you want to clarify/know about the company?" If the interviewer spends time answering your questions, she is somehow briefing you on your future job. She will not entertain questions if she knows that you are not fit for the position. If the interviewer responds to your questions, she wants you to see the bigger picture of the company you will be involved in.
4. "Please come by tomorrow and meet the team." This is just like saying "I want you to meet the people you will be working with." Some companies are particular on "cultural fit." They will introduce you to the team to gather feedback from other employees. So, if you show up calm, assertive yet friendly, you may indeed get hired for the job!