After applying a feather effect nothing happens. Reason You must press the delete key to remove the excess selection after feathering in order to see the desired effect.
Solution Enter image edit mode.
Objects must be converted to images to perform the following steps. Merge Images to convert a vector object to an image. With a selection tool such as the marquee, lasso, or magic wand, select pixels within the image that will have a feathered edge. Now delete the excess portion of the pixels in the selection for a feather effect. See examples below.