sorry forgot to say all the best!
one word of advice, try not to price too low, as you might end being a busy fool!
a good starter is to price jobs at say a minimum a £1 a window (small to medium) and a minimum of £10 per job, even if they only have 5 windows. i try to have a minimum charge of £15. i try to do my jobs every 8 weeks so try and charge £20 for a standard 3 bed house.
remember you can always come down in price, never up if they say its too expensive.