I like the orange chair but it needs to be brought out farther into the room....maybe with a floor lamp behind it to give it more prominence.

Hi, It would seem as if your family room is unbalanced. All the furniture is off to one side of the room. I would suggest finding two small scale chairs to put in front of the entryway opposite the fireplace. You will then have a square cozy conversation space. You also need some wall hangings/art. Something above the tv, perhaps 3 small pictures in a row of your family? Although the sheers may seem functional, I would top them with a valance of some sort with a pattern that compliments the chairs. It will draw your eye upwards and add warmth to the space. The fireplace mantle does need some help. I would put two accessories that are somewhat medium scale on either end and something small in the middle. Accessorize in odd numbers. I hope this helps. The orange chair seems lost in the corner get another to match scale and bring it into the room as stated before. I hope this helps.

Changing the wall color to an apple green would add instant personality. It would also look great with your furnishings. Then, you can mix your toss pillows with solid of green or even peach or "salmon" color. A larger vase on the mantel
in the orange color with fresh little daisies would look refreshing.

Here are a couple of palettes with orange and greens

More art in case you decide to replace the mirror.

I think if you switched to a colorful rug and colorful curtains and some pillows with color (all in colors that coordinate with one another), that would take care of the whole issue. And if one of those colors was orange, there'd be no need to reupholster the chair. I can't tell the layout exactly from these photos, but I agree that the furniture arrangement seems a little off, so maybe work on tweaking that.