Video/Dialogue reference

When writing the script I wanted the monologue to seem real so decided to take reference from real peoples video blogs, especially from video applications from below (specifically taking note of young women's mannerisms, way of speech):

http://applicants.mars-one.com/

To achieve this natural flow I was fully prepared for my actor to improvise as much as she liked, as long as she got the general gist of each 'scene.'

Something I wanted to avoid was the following:

As it's cheesy and unbelievable (no ones that excited about toothpaste). I feel that leaving in pauses and breaks in speech with hopefully sell the performance more. However the character in my film is aware she is being film so won't act completely at ease, initially being a little static/awkward in front of the camera. This is also enhanced by her limited space to move.