tell u what

 

first divide the paragraphs into generally 4 or sometimes 5 parts(this u can do even on the question paper)

 

and yes leo bhai is right if u give a good heading the general impression comes out to be good

 

under each parts(that u would have divided ur passage into) write not more than 4 sub parts

 

dont use sentences for eg if the line goes------>"bla bla diseases are caused due to the cntamination of water by sewage disposal" write it as