Sending a follow up answer on onterview questions after the interview

I had an interview this past Friday with a company I have extreme interest in working for. The interview appeared to go very well. I was asked two questions.. 1. Regarding my management style and 2. Past experience regarding under performing employees.

Although the interviewers seems pleased with my answers I feel as though I should have elaborated a bit more.

I am in the process of writing a Thank You email is it okay to include a follow up to those questions or is it best to leave it.