Hi yoscholtz. I can see you have a definitely understanding of what you like, and perhaps only struggle in putting what's in your mind together in your space. Try a few things by moving things around or layering grouped objects you like, then edit the room by taking things away until you are happy. It costs nothing to play with your interior, you often surprise yourself by following someone else's idea, only because they see your space very different to the person living in it. So..
From your layout I suggest the following. Push back the sofa at least to the first pane of glass, so it defines a bigger living zone, as these leather sofas are very heavy looking.
Place a neutral area rug big enough to go under the foot of each sofa, making he space feel generous and inviting. Turn your coffee able to face the same direction as your tv, place a floor lamp in your corner next to the tv, or my preference is to add a table lamp to the tv low line. A pair of framed prints in your style above the sofa on the wall, and in the dining room, a mirror on the wall to reflect the living area, bringing the house together. don't overload your cushions, either place them all at one end of each sofa, one with a throw (the wall sofa) and stack some complimentary cushions on this end. This allows youth introduce colour. Don't just choose blue, bring in another tone, whether it be close or complimentary, blended colour is softer, and feels more personal, unlike display lounges. To make it feel lived in, allow for personal accents, framed pictures do it a little, it more so your accents and objects you place usually come from a theme or share something in common. And so these areas don't feel disconnected to each other, borrow something from each space and take it into the next joining space, for example, a colour, a texture or object.
I've seen turquoise ceramic side tables like drums that Are perforated metal, or geometric ceramic ones that would look great in your lounge corner, or a round ottoman. The more soft fabric you bring in, the more it will feel inviting.