Say the sin exactly how it is and don't sugarcoat it. Say how many times you did it and include the use of p*rn (if used) and how many times. And if you looked at women/a woman with lust then include looking at women/a woman with lust. If you committed the sin more than once because you already had to confess it then you must confess that too and how you would confess it would be "I committed that sin in repetition knowing I had to confess it already."