I would get some drapes that have the teal color and maybe another color too? To add in a different accent color?

I would also suggest a different pattern. I think the repeat of the circular pattern is more matchy-matchy than the actual color choice. Without knowing your style, or the rest of the room, here are a couple fabric with teal.

I agree, the curtain and rug do not work well together. You knew that and wanted confirmation probably. You can't use two such similar patterns on rug and curtains. You may have seen some very high end rooms done where the wallpaper and upholstery and curtains all match. That is a special exception,

Maybe a pretty seagrass rug (not sisal, seagrass or jute only, sisal is a bad thing) would be nice in the dining room? Or if you are more attached to the rug, some plain curtains or ones with a small pattern.

You have chosen a lovely color scheme.

Valley Mist has green undertones and your drapery looks more blue green, so when trying to build on this palette, you need to go to different coloring. In this case, a gray with possibly purple undertones would work well. But rug should be very subtle. Possibly a tone on tone gray or beige. Sometimes Pier 1 and World Market have some great rugs. I would do a wool rug in a dining room easier to maintain. I personally don't like Jute or Sisal. Tough in a dining room to get little pieces of dropped food out and wine stains, almost impossible.

Trying to post a rug from Crate and Barrel but having trouble. Look at Celosia Natural Hand Knotted Rug in the beige and light tones. They also have some tone on tone rugs as well.

• As for me it is too matchy-matchy curtains, rug and wall color. Mint, mint and more mint.

Flo Managan, thank you for some direction , the examples you shared are beautiful.

Maybe I could go with something very simple, like this:

I will post a picture later. The room is in disarray due to kitchen work going on right now.