Your door and tile colors are both warm, so let's use that as the common thread. Use warm cream/beige/brown on the walls and then any color you want in your upholstery (things need to coordinate, not match). Throw in some black pieces--like a console in the foyer or behind the sofa and/or a coffee table OR end table to pull things together.

I like the ceiling. I think the hanging lights are too fancy and distract from the ceiling decor. A simpler light would look better or sticking with the canned lights you have. The walls have too many big, black things on them. It's hard to tell if they are windows with shade --- in which case I'd pick something lighter, perhaps to echo the ceiling, TVs (how many do you need?) or what. I'd consider a big piece of statement art in the place of at least one. If you're on a budget, get a large, high quality photo in the right colors, you can take it yourself. Sepia and black architectural might work. I like more color and more natural light. You may have closed the shades for a better picture, so it's hard to comment on the light, plus windows are a feature of your room, not exactly a decorator's choice. I would consider how to get a few small pops of color in, pillows, flowers, candles, maybe even a runner rug along the right wall. If you are doing this as part of a portfolio, the entire ensemble would look more welcoming with a few touches like someone lives there. Something on the coffee table, for example. A few books and a candle. A tray with tea things, a vase of flowers or basket of fruit. Pick one or two things and make it composed. You see this a lot in designer Houzz photos. Here's an example, you note this picture would be a lot more stark with an empty table: https://www.houzz.com/photos/21-house-contemporary-living-room-san-francisco-phvw-vp~60642

You don't have to give up your beloved pink. Pink, brown and grey are doable. I googled pink and grey living room and saw some great pictures. Maybe get a large carpet that pulls out the pink (must match the same shade of pink). Then place your beautiful little pink and cream Kashmir(?) carpet over it. Also pull that same pink into sofa pillows. And a similar pink and brown Tablecloth for the dining table will pull the colours together. Just need to make sure all the pinks are the same shade with small accents/border of the same brown and grey from the sofa. Solid colours or subtle designs will be easier to coordinate than bold dramatic prints. These 2 are not the right shade of pink but you get the idea, I hope. Carpets with tone on tone pattern. A dusty rose on one wall would be nice too.

I agree with painting the doors. All my interior doors are a deep charcoal grey. You'd be surprised how expensive it makes them look. That aside I would start with a rug. A huge rug. Something chic with a lot of color. Then add love seats in white, colorful pillows, and chairs in fabrics that pickup the colors in your rug. No BIG furniture. Just because you have a big room doesn't mean you need to stick a brown sectional in it. A couple fancy topiary would look great under those windows. And dont forget lighting.