If you had an interview not so good that you landed a job opening that you really think would be a great fit for you, don't give up, most of the time, companies look for candidates who meet 'Technical Requirements'.
Then Don't give up! Write a note, send an email, or call the interviewer to let them know that you think you can be of use to the company because you clearly understand that this job would be a good choice. Restate what you have to offer the company and say you'd like another opportunity to contribute.
This strategy can work. Imagine that every interview that doesn't work you do it? The results may surprise you! It can earn you a great job offer. But one thing is certain: if you don't try, your chances will always be zero. We've seen this approach work on many occasions and encourage you to try it too, every time!
If you follow these little strategies above, you'll be better prepared than any candidate an interviewer has ever seen. We wish you a good job!