Interior design above, Vesta Fort; photo, Paul Costello for Domino, May 2006..
Here's a quick and simple headboard tip from Mary McDonald, a decorator known for creating glamorous, comfortable beds: when contemplating a custom upholstered piece, McDonald recommends sketching the desired form, in actual size, on craft paper. Next, cut the shape out and tape it to the wall behind the bed for preview. Doing this could help prevent disaster. (Tip appeared in House & Garden, November 2001.)
Above is JBK's circa 1960 White House bedroom, decorated by Sister Parish with headboard covered in, I believe, Dek Tillett daisy print cotton. Image via Elle Decor.