I got this creased card as part of a lot to fill out my binder collection. I don’t mind having low-grade cards in my binders since they’re mostly base commons, but I’d like to reduce the appearance of this crease.

Since this is a bigger crease across the full width of the card, first I’m going to press the card between two sheets of parchment paper (moistened with 10% isopropyl alcohol) in a card press (two pieces of foam and acrylic plates), then remove the moisture and let it dry in the press. The goal here is to introduce slightly more moisture so the cardstock expands enough to correct the crease, then let it dry flat. Depending on how it looks in a few hours, I may work the crease a bone tool before letting it dry in the press.