I laid the center out on the flat, dense dining room carpet on an old sheet, used spray starch and ironed it good. The starch is amazing, it is so smooth and flat. This is the first time I used starch but I sure will be from now on.
The starch made it very easy to turn under the edges, pinch and baste. I know that I should have just basted it onto the background but, I really wanted to get the edges done well first so they don't get stretched out with handling.