She says that making your interviewee as comfortable as possible is paramount, because it'll lead to more interesting and engaging answers.
The preparation you make before they arrive is a key part of this: if you have everything in place and planned out, by the time they arrive, you'll appear organised and professional. This can transfer confidence to your contributor.
In these videos, Kat explains this in more detail, as well as discussing techniques around altering the interviewee's eyeline and the effect it may have on the viewer.
