Hi! Ultimately, this decision is up to you--there's not a true right answer and both options are fine. We generally recommend against including sketches because a portfolio is meant to show your strongest work and the inclusion of incomplete pieces may unintentionally give the impression that you will not be able to provide a polished piece for the zine. However, if you feel confident that the rest of your portfolio makes clear that you have this ability, you may find it worthwhile to include the sketches as we do like to see your takes on the characters. Otherwise, the place of those sketches may be better used by a more polished piece. Some advice that may help to obviate this decision entirely would be to delay your application a bit until you can polish up one of your sketches into a complete piece. There's no harm in applying a bit later and then you won't have to choose. Again, ultimately, any of these options work totally fine. It's your portfolio, and there are many different ways to show your skills.