The only requirement we have for someone to join is the 25 year age limit. I wish there were a magic gadget that could show maturity because while there are those below that age who have it (and to me your post shows its quite likely you do) there are those above it who don't (and we eventually find out they either change or no longer enjoy the privilege of being a TOGger.
When people sign up they have to enter their birthdate in our profile pages and this is the key way we check if people are or are not old enough to apply. We have found in the past that those who lie here tend to get caught out down the track and the resultant perma-ban isn't a price that their willing to enjoy when it comes down. Because that is what happens for real and true if it is found out.
Now it might all sound like bad news at this point and I know that 18 months seems like an eternity to any gamer young or old so I could understand if you tried to get admission by using another account, what I would offer there though is that this isn't a wise idea for several reasons, the least of which is what I mentioned above as the penalty if it got found out.
I could suggest you marry someone over 25 and get them to join, because then you could use the spouse clause to become a member but honestly that isn't the best way to go either, as to have a partner in life is a decision that should not be made merely on entry to TOG though I would like to think on the whole we are good enough to warrant it.
I will however make your post known to the DC (division captain) in GW and while you might not be able to join our guilds in game you might be able to find yourself playing with them on a regular basis if it is indeed possible.
The current DC is a lovely person by the forum name of Pumpkin Lykos
and I can assure you that they are one of the most caring people we have in TOG so if anyone can help in game with advice or otherwise it would be them.