ooooof. teenage lifestyle? If you're doing AQA and they gave you that context then that sucks a bit. What other contexts do you have?
I did my NEA this year and we were shown examples of what higher grade portifolios should look like in class. the quality was purposely bad so we couldnt read any information which really sucked. But hey, it seems you've got full examples so you've got a nice advantage.
As for your question, I would advise you not to pick textiles. About four or five people picked it in my class and decided to make environmentally friendly bags. The prototypes they made were trash- the actual prducts were creative but you need to realise that to make something decent in textiles, you need a lot of experience and specialist machiney which youre school probably will have, but it won't do the job. Their prototypes looked awful.
ALso, please do not make a product made of 70%+ of metal- it's extremely difficult to work with and doesnt really produce good aesthetics.
Also, i dont want to scare you, but the NEA was painful....seriously. I had to spend a good 150-250 hours on it, sometimes doing work about 15 hours a day in the days before the final deadline and regualarly doing about 5-6 per week before. Its difficult. But, if you put work into it at the start and make a good/ unique product, it'll be much easier.
Finally- my teacher was an examiner and she told us to make sure that our clients are REAL people. Dont make them up!! Just ask your friend who doesnt do DT to be you're client
If you PM me and tell me all the contexts AQA offered this year i may be able to help a bit more
