DIY Linen Cushion Covers: Easy Envelope Style Sewing Project

Want to refresh your living room without buying new cushions? These envelope-style linen cushion covers take about an hour, need no zippers or buttons, and are perfect for beginners. Linen blend fabric gives them a relaxed, textured look that works for every season. Here's my step-by-step tutorial, with measurements for a standard 18 x 18 inch cushion insert.

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Materials you'll need

1 cushion insert (18 x 18 inches)
Linen blend or organic cotton fabric, about 0.75 yard (70 cm) per cover
Matching thread
Sewing machine (or needle and thread for hand sewing)
Fabric scissors or rotary cutter
Measuring tape, pins or clips, and an iron

Fabric tip: Medium-weight woven fabrics hold their shape best for cushions. I like linen blends because they soften with every wash and don't wrinkle as much as pure linen. You can find a wide range of linen blend and organic cotton fabrics in solid, yarn-dyed and printed styles if you want a coordinated set.

Step 1: Wash and iron your fabric

Pre-wash the fabric the same way you'll wash the finished cover. Linen and cotton can shrink slightly, so this keeps the fit right. Iron it flat before cutting.

Step 2: Cut the pieces

For an 18 x 18 inch insert, cut:

1 front piece: 19 x 19 inches
2 back pieces: 19 x 13 inches each

The extra inch allows for a ½-inch seam allowance on every side.

Step 3: Hem the back pieces

On each back piece, take one of the long 19-inch edges. Fold it over ½ inch, press, then fold another ½ inch and press again. Stitch close to the folded edge. These hemmed edges become the envelope opening.

Step 4: Layer the pieces

Lay the front piece right side up. Place one back piece on top, right side down, lined up with the top edge and its hemmed edge toward the middle. Place the second back piece right side down, lined up with the bottom edge. The two hemmed edges will overlap by about 5 inches in the center.

Step 5: Pin and sew

Pin or clip all around the edges. Sew around all four sides with a ½-inch seam allowance, backstitching at the start and finish. Go over the overlap area twice for extra strength.

Step 6: Clip corners and turn

Trim the corners diagonally, close to the stitching but not cutting through it. This gives you sharp corners. Turn the cover right side out through the envelope opening and push the corners out gently with a chopstick or pencil.

Step 7: Press and stuff

Iron the cover flat, then slide in the cushion insert. Fluff it up and you're done!

Styling ideas

Mix a solid linen cover with a yarn-dyed check or stripe for a layered look.
Use earthy tones like sage, terracotta and oatmeal for a natural, boho feel.
Make a lighter cotton set for summer and a heavier linen blend set for winter, then swap them seasonally.

Why I love natural fabrics for home decor

Linen and organic cotton are breathable, durable and get softer over time. Many are now made with certified sustainable fibers. Mills such as Dinesh Exports, a woven fabric manufacturer in India, produce GOTS-certified organic cotton and linen blends, so eco-friendly options are easy to find.

Have you tried making your own cushion covers? Share your version in the comments! 🧵