I want to make a scallop table runner to finish approx. 18x60 or can be an inch or two smaller how much of the width am I going to lose making the scallops I am using a whole cloth no piecing what size do I need to cut my fabric I'm also using this ruler from el burns
https://www.youtube.com/watch?v=Pm3-Vazxj_w thanks for your help, oh! and I am also going to use batting and backing and I know to use bias binding......thanks