I did read the thread and saw that you can't see the TV on the wall everyone suggested. I would face the sofa to the fireplace and put the chairs on either side of the FP facing each other. Put matching end tables and lamps on the FP side of the chairs. You need a larger rug that the sofa and chair legs can sit on to pull the seating into a conversation group. There is a little bit of a sense of clutter in one corner. I might remove the etagere from the room, thereby removing the clutter it contributes with the stacked books. Put the small table on that wall with a small lamp and some framed photos. There's possibly too many large lamps. I think I count three plus sconces and overhead lighting, but the placement is better in your new photos. I would also add a few larger pieces of art on the wall, table and/or mantel and bring some touches of red in. That will make the walls relate to the conversation group around the FP, which is the only place you have red.

J. C. Penney carries a lot of curtain panels & drapes for all kinds of rods. Sheers, semi-sheers, lined, etc. They can be ordered on-line; easily returned and even easier to return if you have a store near you. They carry Royal Velvet brand & I've had good luck with the quality. I'd hesitate to order a light fixture on line mostly because it would be difficult to return (ship back) if you didn't like it. I'd want to see it first. I like celerygirls furniture arrangement - the 2 chairs on the wall with the windows. The chairs seem too 'lightweight' to be placed where you had them. You can see through them into the room. They need something substantial behind them for support - the wall. You have a great entryway to work with too!

Sounds like you and hubby aren’t on the same page. Buying a table, without ability to return is red flag to me. He bought that rug too without your involvement. The rug is wrong size and style. No photo of the table. But better sit down and talk about this and reach some compromises otherwise, these situations can fester and get ugly over time.

Great simple, attractive design to start with. I don't think you need much more if you are mintaining contemporary look. Less will be more- but this also means focus on quality. Make every additional piece count. Wall color looks grey-? It reads a little lavendar on my monitor. Are you keeping that? If so, pillows with any color in them will have to compliment wall color (blue, for ex, may pull out more lavendar, which wouldn't look great, imo); so, too, should everything else. I would wait and do pillows last. Start with new rug or great piece of art, large scale and above the sofa, before getting pillows, etc. Find something that helps you confirm a simple color scheme, something to add to the white you have. Art will help add personality. Your orchid on table looks great. Oversized, stacked coffee table books always look great- even one stack of books, placed across from orchid. And maybe think about replacing blinds with something more contemporary- solar shades, in white, black, grey, or brown- depending on color scheme. A chandelier will look great- and try to have at least one more source of lighting, a floor and/or table lamp. And maybe a sleek, black, small pedestal side table. For a final touch, add something green and alive- A vase of bamboo stalks or some modern looking plant. Good luck!