Book Writer needed

I am looking for a writer to help me write a book on the topic of making films using mobile phones/ cellphones (mobile filmmaking). I have written several articles in this area that need to be expanded into a book. There may also be an opportunity to project manage the book, if you have those skills. Proven portfolio is a MUST - do not apply if no portfolio Must have had experience in writing on filmmaking or mobile technology and have good grasp of technical aspects Previous experience in 'ghostwriting' or assisting with authoring books is highly desirable High proficiency in English Begin your response with "Hello AR" or it will be ignored.