Not sure the "gold" semi-sheer will look that great with a gray sofa. Perhaps you could take a sofa pillow to the store with you to look at them in bright light side by side to see if they give you the look you want. There are a lot of gray and white combinations you might consider. https://www.google.com/search?q=gray+semi+sheer+curtains+gray+on+gray+or+white+on+white+or+white+on+gray&client=firefox-b-1-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiTmdLTuMDqAhVcmHIEHX85DZIQ_AUoAnoECA0QBA&biw=1366&bih=654#imgrc=pVzprtAcVI_JYM

So buy two panels? And style them open like this... Yes, two panels. :-) If your ceilings are 8', you'll want to buy 95"-96" curtains, and mount the rod high enough so that the curtains barely kiss the floor. The rod should also extend roughly 8"-10" (depending on the thickness of the panels) on either side of the window, so that the window isn't blocked by any fabric when the curtains are open. In the photo you posted of the pink cotton panels, the rod is mounted too close to the top of the window (the panels are too short, despite the slight break at the bottom; if you want a break or puddling, you need longer panels to create breathing room at the top of the window), and there isn't sufficient space on either side of the window for the curtains to rest fully against the wall. They also failed to hide the mounting brackets on the sides, using the last fold of fabric as they slid the panel onto the rod. :-D Oh, and I wanted to mention one last thing, since it just happened to me 2 days ago: If you go with washable 100% cotton, make sure the store/site you buy from allows returns after washing. I received a substantial order from Bed, Bath, & Beyond, and immediately tossed all 12 panels in the wash (2 loads with 6 each). The cotton panels shrunk by *eight* inches. I was so mad. Back they go, to BB&B!

There are many people who make mistake in selecting a quality curtain for their living or bedroom. If you don't want to do the same, please read these important tips for choosing curtains for your rooms. First understand the difference between curtains and curtains. A curtain is made of lightweight material and mostly used for privacy purposes whereas curtains are made of tougher, thicker fabric that blocks sunlight. So now you know the basic difference between these two items. Let's talk about the size of the curtains, generally the width of the curtains should be at least twice the width of your window. As for length, you can go for the floor-to-ceiling shape of the room or if you have kids in the house keep the curtains a few inches off the floor. If you are interested in which design and color of curtains then click on the link above to know in detail.

You can buy iron on tape to shorten them without having to sew. https://www.bedbathandbeyond.com/store/product/ready-made-curtain-iron-on-hem-tape/215727