Great for the back porch. Make Drop Cloth Curtains for Outdoor Spaces and Porches. Rather than cutting excess and hemming that side, this crafter folded the excess over as a valance.
5 Minute No-Sew Drop Cloth Curtain Tutorial - Click through for full instructions and sources for these specific drop cloths and clip rings at Thought from Alice.
How to make drop cloth curtains for the porch or patio - Debbiedoos (How To Make Curtains Ideas)
how to make an outdoor curtain rod, plus links to how to make outdoor curtains (really easy) and an outdoor candle chandelier - Modern Patio
Sheer porch curtains are an easy way to class it up
Beautiful Outdoor / Sunbrella Fabrics Fade and Mildew Resistant Outdoor Drapery Hardware that won't rust or corrode Professionally hand-crafted by an experienced drapery work-room Quality.