You could also add some fabric that has green in it and some toward pink to broaden the range. There are "value finder" tools that help you read the value of a fabric.
One way is to lay the fabrics on a copy machine and make a black and white photocopy. You can see at a glance if your selection has a nice range of value (light, medium, dark) or if they all blend. Looking at it in black and white takes the "oh but isn't this color beautiful?" trick of the eye out of the equation.