Start with size
A 60 cm × 60 cm scatter cushion suits most deep sofas and beds. On a standard three-seater, two or three large cushions look generous; smaller cushions can disappear against a deep seat.
If you are layering sizes, put the largest at the back and work forward with smaller or rectangular cushions.
Choose a good inner
Down feather inners hold a soft, full shape and can be plumped back up each day. A slightly larger inner than the cover gives that full, "karate-chopped" look without looking stuffed.
Mix patterns with a common thread
Picture cushions and patterned velvets work best when one colour runs through them all — a deep jade, a dusty rose or an antique gold. Pair one bold design with a quieter supporting pattern rather than three statement pieces.
Repeating a design between a lampshade and a scatter cushion ties a room together and makes it feel deliberately layered.
Caring for velvet
Keep velvet out of strong direct sun to protect the colour, brush the pile gently with a soft brush, and spot-clean spills straight away. Plump and rotate cushions regularly so they wear evenly.