Scatter cushions, also called throw pillows in some parts of the world, are small, decorative cushions that accent a room's decor. Making your own scatter cushions is an easy way to highlight colours or design themes in a room. If you have leftover fabric from other design elements in the room, such as curtains or couch covers, then you can use that fabric to make perfectly matched scatter cushions.
Measure the dimensions of the pillow form you've chosen for the scatter cushions. For example's sake, a pillow form of 13-by-13 inches is assumed.
Add one square inch to the size of the pillow form to get the size of the pillow face piece of fabric. The example form calls for 14-by-14 inches.
Divide the pillow face size in half, then add 2 1/2 inches to the short side to get the size of the two back pieces of fabric for the scatter cushion cover. That's 9 1/2-by-14 inches for the example pillow form.
Cut out the pillow face and two back panels per the dimensions of your pillow form from your chosen fabric using sharp scissors.
Fold a double 1/4-inch seam on all the edges of the pieces of fabric, totally enclosing the raw edge of the material. Sew the seam down with straight stitch on a sewing machine.
Lay the pillow face panel wrong-side down on your work surface. Place the two back panels wrong-side up over the top of the pillow face, with the extra 2 1/2 inches added to the panels overlapping at the back to form a flap which you can use to stuff the pillow case once it is sewn.
Pin the back panels to the pillow face panel all the way around the edges. Allow a 5/8-inch seam all around and sew the pinned edges together using straight stitch on the sewing machine. Remove the pins from each side before you sew it together so that you don't damage the sewing machine by sewing over pins.
Turn the scatter cushion cover inside out, so that the right-side of the fabric is now on the outside. Push the corners out so that the cover is nicely square.
Open the flap at the back created by the overlapping back panels and stuff the pillow form inside to finish the scatter cushion.
If you want to add trim to the cushion, such as piping or tassels, pin the trim with the sewing edge out and the trim edge in, in between the pillow face and the back panels before you sew them together. When you turn the pillow cover in the right way, the trim will now be on the outside, with the sewing edge hidden between the seams.