Table and floor lamps would help enormously. A larger rug, large enough to go under at least the front legs of the sofa and chairs. And, you artwork is hung extremely high, especially since you will mostly be looking at it from a seated position. I like the bright yellow, but it evokes a mood that is more "bright and cheerful" than "elegant and warm."

What are you willing/able to do? What, specifically, are you unhappy with? Are you considering replacing the furniture? Paint the walls? Without more information it's difficult for me to make suggestions. However, I'd strongly suggest moving that chair away from the draperies/window. And also change the paint color. Is the room as small as it looks in these pictures? If so, that furniture, in my opinion, is far too large. When you say "Beautify my living room again" (again being the word I'm referring to), what did it look like before when you considered it beautiful? I think you've got a lot to work with. It would also probably be a good idea for you to post this also in the Home Decorating Forum.

Thank you for being clear about what has to stay, so I'm going to deal with your "givens," the built-ins and sofas. --Is the current carpet in good shape and comfy for the kids? Of so, get it cleaned and leave it. It harmonizes with the fireplace, and kids live on the floor. You can get hardwoods when they're older. --Choose a much lighter and warm cream/taupe wall paint that goes with the carpeting and stone. Sorry, honey. That will NOT be gray. Other Commentors will make some good paint suggestions, taking into account that you have a lot of outdoor greenery that affects paint choices In good natural light, take a close up of the carpeting if you decide to keep it. If you need curtains for privacy or to dim room, match them to the paint color--ceiling to floor length. Also need to take into consideration the kitchen area wall color. Can you show us that? (Always show all walls of an open space when asking a Design Dilemma.) --Rethink layout to create TV conversational zone and a kid zone. TV/Conversational zone: Move wider sofa to face the fireplace and the smaller sofa to face the great outdoors! It looks like nature is right there, so it's an extension of your living room. Don't block the great view! Move the smaller sofa against the wall so it creates an "L" with the wider sofa. Put a large, colorful, circular storage ottoman in the "L" or two colorful smaller storage ottomans. Some of the spillover of toys and such can go in there. Put tray(s) on top of ottomans when entertaining. The one below is kind of fancy, but there are lots of storage ottoman options out there. --TV conversational zone.:Move TV to one of the built-ins since those are one of your givens. I'm going to say something sacrilegeous: Get a TV that fits in one of the built-ins. --Kid zone. This will be a play area between the kitchen and the TV/conversational part of the space. Get open wood shelving, sofa height if possibl to go against long sofa. Get baskets for the kids' toys. The finish should be the same as your wood trim. You're sure to find bookshelves like that on Craigslist. Down the road, when kids are older, you can get a lovely sofa console cabinet to use as a buffet. Lighting: Proportions will be important. Something in a wood finish but with modern lines would be great. Here's an article on measurements for different sized rooms, tall ceilings, etc https://www.lumens.com/how-tos-and-advice/how-to-choose-the-right-size-ceiling-light.html.

Hi Beverly, I did order samples of the wallpapers. I’m afraid you’re right about my choice being too busy. Additionally, it’s a large pattern and might be too broken up on my dining room walls which don’t have large expanses visible. Sigh, I’m starting to rethink my whole project. When I look at my inspiration rooms, almost all feature a healthy dose of my favorite colors, blue and green. I love my living room rug but I think the orange is so dominant and likely precludes my use of blue or green. I’ve booked an in-home consultation with an interior designer and hope she can point me in a better direction.