CAN somebody help me please?

Hey i bought a scooter and it worked fine for about 3 days then when i started it the tickover was fine but asoon as i accelarated it started to bog and died down, alot of people on this website said change your sprak plug, clean your carb, check your air filter.
i changed my sparkplug i cleaned my carb i checked my air filter. and now the bike wont start atall :( but i dont fink its a major because its only 2009 model can somebody help me pleaseeeeeeeeeeee!