Business Visa - B1

The reviews from this forum helped me a lot, I went through them before attending, thought of sharing mine so it could be helpful to someone. I attended the US B1 Visa Interview at Chennai Consulate on 20 and 21 Dec.
First interview at Hyderabad rejected VO saying, “demonstrate better next time.”
On the first day, was biometric completed within 10 min.
On the second day, my interview was scheduled at 10:00 AM and I reached there around 9:30 and it slightly drizzled. After waiting for about 30-40 min my chance came for the interview.
It was counter number 19 and it was a young lady. Before me was a girl applied for her Masters and she was given 221g to submit some more documents.
While I was in the queue, I can hear the questions from counter 19 and 20, VO being ladies are asking the questions loudly and in my mind, I thought I may get from any one of them. I got counter 19.
ME: Hi, Good Morning
VO: Can you please pass on your passport?
Me: Here it is. (I could hear my heart beat once I stand in front of her, but once started conversating, I moved near the mic, standing in relaxing mode and started my answers and smiling throughout my conversation)
VO: Thank you.
VO: What is the purpose of your visit?
Me: My leadership team has invited me to our HQ to discuss about a critical project we plan to implement, they would like to discuss the roadmap for future.
VO: What’s your designation?
Me: Senior xxx engineer. (Then she was going through the screen and changing her expressions all around)
VO: What’s your annual salary?
Me: xxx lacs / annum
VO: how much it is per month?
Me: xxx thousand.
VO: She didn’t hear me and asked again it is?
Me: xxx thousand (I thought she is validating against my previous interview answer)
VO: Where is your company located?
Me: Redwood city, California. (she was typing something and looking at the screen and asking questions)
VO: No, no, in India?
Me: Bangalore, (nodded her head)
VO: What’s your company name?
Me: xx business solutions private Ltd.
VO: What will you do?
Me: I lead a team in conducting xx activities and xx activities.
VO: How many members are in your team. (she looked at my face during this question)
Me: 4-member team.
VO: What will your team do after you come back?
Me: I will work on the project requirements.
VO: No, no in your project?
Me: with confused face, asked her “means”?
VO: Tell me more about your project? Everybody will say, I will come back and work on the project requirements, will come back and work on the technical requirements. (sarcastically)
Me: Then I smiled a bit and said, no mam, as a lead I will work on the project requirements which I have discussed in our meeting and it includes conducting xx activities and xx activities which are part of my project executions. (this I answered in line with my roles and responsibilities mentioned in DS 160).
VO: Your visa is approved.
Me: Thankyou mam. Have a nice time. (left the counter while she is keeping the passport in her rack)
Suggestions: After reading reviews in this forum, I had a suit with tie and wear my company ID card. This I made intentionally to keep the look of a business user as per suggestions from users in this forum.
Be confident and have a smile. I know it is very difficult especially after 1st rejection, even I was very nervous but at least answer confidently. Do not stammer/pause/Think of answer there. Prepare answer well ahead and be ready for all kind of cross question which might come up based on your answer.
* For B1 dress bit professionally. I was wearing suit with a tie and my company ID Card.
* The big help was this forum, I went through most reviews present here. I used to read the question and answer by myself. Rehearse by standing in front of the mirror.
* Don't keep listening to the questions while you are in the queue which might make you more nervous then you are already. Be confident in what you have prepared already.
PS: Got my passport stamped with a 10 year B1/B2 Visa after 4 days.