I think you have a gorgeous home and great taste. A more 'important' and Lower chandelier and a larger area rug with stronger color and/or pattern would complete everything real well.

Your home is very nice. Love the fireplace. I agree with decoenthusiastic. Great suggestions.

A large scale pattern table runner would be nice for a pop of color in the dinning area. It is hard to find just the one but they are easy to make. Look for a local seamstress she could help bring in some color with pillows too. then using the colors in the runner put some different height vases and candle holders to create something taller for the table. if you like this then add that color around the room at the mantel and in the kitchen. one has to be brave and go for a new look. Have fun, buy a lot of stuff at home goods or a place you can easily take it back. invite friends to join the fun and offer comments, don't take it too seriously at this stage you did the hard stuff, this is candy! Even buy a few rugs, pretend it is a design show....have fun!!! Live with the things a few days, add more, edit some out maybe you just need to get some quirky ideas out of your system....lol...enjoy!

I'd throw a teal rug under the kitchen table and have a glass shelf added in front of the gorgeous arched kitchen window then put a tall aqua glass vase (s) on it. The daylight shinning through will then be the focal point. Spotlight over head for evening. Or have the white kitchen pendant lights respray painted to teal.
'decoenthusiaste's advice re seasonal accents of aqua / mustard are correct. I agree the rug under the coffee table would look better in the hallway.
but I don't think the mustard goes with the floor tiles or rugs. The coffee table is not doing anything for me either.
Love the fireplace. The wall to the side of the F/P with the arch could look good with it's interior painted a soft teal and the wall in beige (as the other wall) rather than white. The hall table painted in the teal and placed at the back of the lounge 2 chairs would carry the color through reflect off the mirror or metal panels.
Gretchen Maurer is right re table runner. I'd look for a teal & beige (as wall color) patterned one or center piece in teal as 1st suggested. There are some beautiful wallpapers in your colours of browns & teals; some of the more expensive ones may have matching fabrics.
Most rug retailers will let you take home rugs to try first. So long as you return them in spotless condition. So play around with the ideas. Good luck

All sound suggestions above. First concentrate on balancing your colors by adding teal rugs. The smaller decor items come later. Consider adding curtains with teal in them. You need bigger bolder teal decor. The candlesticks on your entry table are nice but get lost in scale. Great job so far!

The entry should have a strong color on at least one wall. Paint the ceiling in your Dining room.Use art to bring in colorsAdd color with upholstery and accessories.

From a Feng shui perspective you have a lot of representation from the Earth element. To balance it up you need to add in more from the Wood and Metal element. This could be green plants and green/blue colour(not too dark) which will add more of the Wood element. Also bring in more of light colours for exemplet light grey or whites and silver metals from the Metal element. This will balance your room. I hope this was helpful.