Hey it's me.. haha
'Weirdbox', I'm 18 and have had no films distributed and haven't even looked at Freemantle yet. I've been making 'films' since age 13 but didn't get my first recognised basically anywhere till I was 16 or 17 which was at a small festival in my own city/town. The first to actually leave my town got shown somewhere in California (so it left the country too!) but that is from trial and error on my part.
I'm literally finishing year 12 next Monday and am going to spend the holidays writing scripts. Next year in my spare time I will Produce and Direct as many of them as I can, not even bothering to look for distribution till I'm done editing, then I might send a few off to festivals, there's plenty enough in Australia, the rest I'll post on YouTube and even here, get some feedback and take that advice for my next film.
Freemantle Media is highly unlikely to look at you not because you are young, but because you have nothing really to show to them (apart from your script). They'll probably only produce something of somebody's who has some kind of exposure somewhere, maybe placing well in a large scale film festival. Who knows.
My advice though is get out a camera, or find some buddies your age, and visualize some of your ideas. I'm not sure how accurate this is, but I'm pretty sure a lot of TV shows (especially more indie ones) don't get picked up until they have an actual Pilot filmed, and then the directors/producers send it to a distributor and thats when the rest of your series starts. Good luck