TV
Matthewman, who goes by the name Paperlilies on the website, called on visitors to help her create a zombie movie - by volunteering, offering ideas and uploading videos - at the beginning of last month.
Producers will follow her as she attempts to make the contributions into a film and organise a fancy-dress Halloween premiere party, with two web films each week on bbc.co.uk.
Bryony Makes A Zombie Movie will also include a 30-minute television programme for BBC Three telling the full story.
BBC Three controller Danny Cohen said: "This project is part of [our] latest commitment to being a multiplatform network.
"Bryony is part of a new generation of internet talent that our young viewers are already engaging with and, for BBC Three, Bryony is someone we want to nurture."
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