This is a shocking video TBH, (but others are available), yet it illustrates the fact that YouTube is your friend for all fettling matters.
However, I concur with others that you should get the right tool, (if it's not the one you've got), every job is a million per cent easier with the correct toolage
If in doubt post a pic of your freewheel so people can see the lugs and someone will advise you about which tool you need.