I think your room looks great, and you are off to a great start! I would find yellow/gold pillows (very muted ones) and add some other accessories in the room. Maybe add an ottoman or leather chair that has that burnt orange in it. Also, bring in some accessories with gold in them-perhaps lamps, mirrors, and accent tables. I don't think you need a lot to carry the warm tones throughout the room. Perhaps adding a gold toned mirror over the mantel. I think golds, yellows, and grays work beautifully together. Just search "yellows and grays" on Houzz and you will find lots of great pictures for ideas. Also, check out West Elm-they use lots of metallics. Good luck!

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Karen has given you some great suggestions.

Here are some suggestions for a rug and pillows.

Also flipped your picture so it's easier for others to see. :-)

Btw, the rug you currently have could also work just fine.....

Maybe instead of a new rug, add a warm colored chair like Karen suggested and as shown in these pictures and then you would also sprinkle in some other warm accents like in pillows, accessories (accent or coffee) tables, etc.