Pam Keesey demonstrates how to use the transform and gradient tools in Expression Blend to create the impression of a reflection of an object on the artboard.
Source: Expression IQ
This article shows you how to create a reflection of an Image object on the artboard. In order to create a reflection of an image, you first add an image to your project. You then create a container for your images and adjust the height, width, and placement of the container to create a mirror image. After you have created the container and added the images, you can apply transforms and gradients to create the impression of a reflection of the image.
