We have to :

(i)Make sure of the subject we want to write about,

(ii)Stick to a specific issue,

(iii)Think of the kind of evidence we can use to support the argument,

(iv)Provide background information, where needed,

(v)Answer opposite claims,

(vi)Use the right connectives to show the logical relationship in the argument, and

(vii)Make a conclusive statement at the end.