This page lists some of the lessons I have learnt in conducting short interviews with people on video.
Ensure the person being interviewed is in the light.
Interviews look best when there is activity and some noise in the background.
Head and shoulders seems to work fine.
When recording - look at the person - not at the screen - and encourage them with smiles and nods of the head. This is a conversation you are having.
Tell people when they come to the end of their statement to smile and to look straight at the camera and not to look away. This seems to work best.
Avoid mirrors in the background!!
Give people advance warning and time to prepare their reply in their heads but make sure they don't have their at hand during the interview!
Suggest they keep relatively still.
Allow people just a little longer.
Aim to do interviews in one-take and with no editing. Its not so difficult.
Edit using Windows Movie Maker. If I have got it right then no need to edit at all but may need to clip the start and end of the video. Windows Movie Maker is great for this.