As per sec142 the complaint is to be filed in the court of Metropoliton Megistrate having terrotorial jurisdiction over the matter. I right now cannot send you a format but Iam giving u broad guidelines
a:- the complaint must give full details of the complainant.
b:-that the relation between the complainant and the accused be explained and the incident of occuring the liability of debt in satisfaction whereof the cheque was given shouls be fully explained.
c:- it should be clearly mentioned that the cheqe was given i satisfaction of a financial abligation and that financial obligation is still unsatiafied.
d:-the fact of giving notice u/s138 be mentioned and also that the accused failed to pay the dues despite noticeshould be mentioned.
e:- the cause of action arises when the complainant recived notice of bouncing of cheque and then when the accused failed to make payment despite notice
f:-the clause regarding territorial jurisdiction of the court be mentioned.
g:- aprayer for punishing the accused as per the provisions of 138 of N.I. Act be made
you should also give the list of witnesses and the document on which you want to rely.
AS per provision of sec145 of the ACT evidences may be filed along with an affidevit
I do hope this will suffice your purpose