I've made it almost all the way through the Northern Pacific tutorial, but am totally stuck at how to remove the insides of the "O", "R", "A",and "P" letters- they're entirely black. I tried to combine them as the tutorial suggested, but I must have done something wrong. And I don't see an alternate way of creating the white space. Can anyone help with this?

Let´s see if this will help in your case:

Cheers