By feather we meant adding a gradient to the edge of your design so that your artwork blends with the white of the lanyard. Mostly just a tip to get rid of that hard edge since it would be difficult to sublimate all the way to the edges of the lanyard. Hopefully that makes sense and of course if you have any questions you can give our sublimation team a call at 855.782.4657. They can walk you through anything you may have questions on!