Major Mistakes must be avoided "After the Interview"? 

The interview does not end when you leave the room. How you follow up on the conversation affects the lasting impression you leave on the hiring team, which is just as important as the first impression.

Here are the mistakes to avoid making after the interview:

1. Not being Grateful and Thankful to them.

It's polite – and strategically important – to send a thank-you note to the people who interviewed you. Don't wait too long, and choose email over a physical letter if you suspect the mail may take a few days to arrive.

"Some people like to do it in writing, but with how quickly things move, I always advise an email right away the next day. By waiting a few days or a week, you may have really lost your opportunity at that point to make a great impression.

2. Sending a formulaic thank-you note

Your thank-you note is another opportunity to make a good impression. It's a chance to demonstrate enthusiasm and follow up on the conversation in a meaningful way by referring to something specific you talked about. This means you shouldn't write it in advance or hand it to the receptionist on your way out the door.

3. Exchanging a Gift

This is just weird. Don't do it. There's no need to try to bribe the company.

4. Not Following up properly at given date and time.

Sometimes people get the advantage of following up with proper tone and language and most importantly following gup at the right time. So the firing manager takes the decision after knowing their willingness to work with them company or knowing their need for this job.

These days people wants to wot with those who are more willing to work with commitment rather than the efficient one.

4. Harassing the hiring manager

After you send a thank-you note, resist the temptation to contact the company again unless asked. If a few weeks pass, it's appropriate to check in with a polite email.