Make the Center Crease
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Lay your paper down with the long side running away from you. Fold the right edge over to meet the left edge so the paper folds in half lengthwise. Run your fingernail or thumb along the crease to make it sharp.
Then unfold the paper completely. You should see a single straight line running down the middle from top to bottom. This center crease is your alignment guide for every fold that comes after.
Tip
Crisp creases matter more than you'd think. A soft crease causes the paper to bow later when you stack layers. Press hard and slow.










