Squaring up a medallion quilt is one of those finishing steps that makes quilters nervous — and for good reason. Your mat isn’t big enough, your ruler isn’t long enough, and one wrong cut on a medallion you’ve spent weeks on is not a fun thought.

Here’s the method I use. It works especially well for symmetrical designs like medallions.

Watch first, then read

Step 1: Fold in half and align the design

Fold your quilt in half. For a symmetrical medallion, align along a design element — I use the stems — so both sides are equidistant from the fold. This is your reference point for everything that follows.

Step 2: Compare sides before you cut

Before you trim anything, look at both sides and compare. Our quilting won’t be perfectly even — let’s be honest about that. Find the side with the most quilting and use that as your reference. Then match the opposite side to it.

Give yourself room to work:

• At least 4″ from your appliqués
• At least 2″ from your quilting lines — if you have it
• If you don’t have that much, trim to make it symmetrical. Symmetry is the priority.

Trim one side, then fold in the other direction and repeat.

Step 3: Line up on your mat

Now that the quilt is folded and roughly trimmed it will fit on your mat. Line it up along the mat edge.

Step 4: Measure from the center — not the edge

This is the step most people skip and regret. For a medallion, even a perfectly square quilt looks wrong if the medallion is off-center. Measure from the center out to each edge. You want equal measurements on both sides.

Mark your cut line with an air erase marker. Don’t cut freehand — I’m not that confident, and you don’t need to be either.

Step 5: Check your corners

Lay a ruler on each corner to verify the angle is true. A straight edge doesn’t guarantee a square corner.

Step 6: The diagonal fold test

Fold your quilt diagonally, then diagonally again. Your edges should be even and when you put a ruler against the folded corner it should come up square. If it’s close but not perfect — you still have that extra margin to tweak.

The goal: square AND centered

A quilt can be perfectly square and still look wrong if the medallion is sitting off to one side. Measuring from the center solves both problems at once.