To make a conversion, log into your account and click on 'Conversions' from the left menu on your dashboard, or go to the Account section and select 'Conversion.' Next, choose the 'Account from' and 'Account to' for the conversion, along with the 'Currency' and 'Amount.' Once you are ready, click 'Convert,' then press 'Confirm' to complete the conversion or 'Cancel' if you change your mind.