Tip #8: Add a Width of Fabric to Short Curtains

When a curtain panel is too short, a width of fabric can be added at the bottom. The fabric can be a solid color or it can have a pattern that coordinates with the curtain fabric. The fabric can have a texture like velvet or suede to add interest. Adding a fabric at the bottom of the curtain often adds an appealing design detail and makes a packaged curtain look custom made. To add fabric to the hem of a curtain without sewing, simply iron some fabric fusion between the two fabrics to bind them together.

Source: http://www.networx.com/article/8-really-good-tips-for-hanging-curtains