What to do after passing ipcc?

I have passed both groups in May 2012 in first attempt(grand total-398)...I am completely confused what should i do next,,,,Please tell me how to apply for the FInal course and Articleship training and tell me whether there is a chance of mine to be selected for intern in Big 4.......

PS= I am doing my ITT training and i havent completed my OT Training yet(Will be completed in September)

What are the requirements for applying for articleship and what is the procedure for applying for articleship