Press the Record button.
Make sure your microphone is working and the screen recorder is covering the right area.
Click the record button. Try to get 8-10 minutes of quality feedback (you have up to 15).
Remember you can pause the recorder if you want to watch a video or check your email (e.g. to click on an activation link).
Click "Done" on the recorder.
A window will pop up with a preview. Enter your email address and some comments, then hit upload.
Once the site you're testing has seen the video you'll get your rating. It might take a few days so please be patient.
Your screen will look similar to this.