You could try putting a goldfish bowl on your head and saying beep after each statement. Only drink Capri-Sun, take a sh!t down a pipe and walk very slowly with big bounds. At least you will look the part.
Or as an alternative hope that Mr Branson will give you a job in a couple of years, as that is your best way of getting into space as he will be doing it more frequently than NASA and you will actually get to fly the thing a lot more!
Check your facts as I think that NASA does employ from outside, and the ESA has a couple of Brit astronauts.
BEEP...........