H form

HI  I have recently  opened up  export firm   already got iec code  And  I am in process to get vat no  ,My main  question is that If I do  export against h form 
What are the paperwork I need to furnish And after suppose  giving all  paperwork Will I get  easily  h form or  its lengthy process to get  
And to get h form vat is sufficient  registration or I need to register other govt agencies also IF so pls mention the other agency name also 
thanks 
amit