Video tutorials and voice over for an app

We have constructed an app, and require a set of video tutorials to be created. The requirements for this job are very specific: 1. You must be female and speak perfect english with no accent whatsoever. 2. You must be able to follow instructions as to what we require to be demo'd 3. I require a voice sample before you will be considered you for this job. We will use the app jing which is a free download and very simple to use. We will create approximately 10 tutorials of 30 seconds each. This not a hard job it just requires the right female voice.