Very good reflection of the processes and outcomes. Your understanding of the issues around audience, institution, representation and technology are proficient. You are able to communicate your ideas, research and production skills well and you have a proficient ability to discuss the reasons for your choices. Well done.
The main issue preventing level 4 grading here is that you haven't made reference to the feedback received on target audience. I'm sure now looking at the site you can see it is for a young target audience rather than a wider age demographic. Perhaps you could rellect on that and the reasons why it perhaps wouldn't attract a wide age range? Link this to representation of the target audience.