A current cake decorating trend that is gaining popularity is creating a look that mimics fabric. Anything can be an inspiration for this type of look from the brides dress to a piece of family heirloom lace to a design that simply catches the eye. Fabric is relatively to reproduce on a cake with some more advanced decorating techniques. Always practice before attempting the finished look on your cake to avoid disappointing results.
Some possible ideas could include imprinting a piece of lace on fondant, brushing on color and then removing excess color gently will duplicate the lace look. Another idea uses a popular painting technique like sponging to make a crushed velvet effect. You can also piped stitching and embroidery designs directly on the cake using a small round tip and royal icing.
Try several different ways to make exactly the type of look you want.