The blanket isn't as big as I'd like it. It doesn't cover the pillows and doesn't hang down the sides at all. I could buy one more ball in each colour, but then I'm going to have to do the scale dance again. I've decided to carry on in pattern but using only grey. How much grey? I worked out the area I've already crocheted and then the area of another 30 cm all around, put my maths hat on and calculated I need six more balls. I've ordered six more balls. So, I still have a long way to go!