We would look into getting a rug, end table, ottoman, and a long low TV console. Here is an idea for you:

Columbia Timeless Transitional Home · 詳細

You need a long, low TV console. I would try to find one that runs most of the room length so you can place a table lamp on the end near the sectional. I would look for a large round coffee table, and art for the wall opposite the windows. If you add drapes, the rod needs to extend further past the window edges.

Yduboois, you have one ideabook with one picture in it. I suggest you look through the millions of photos on Houzz, find the ones you love, then come back with a vision for the room and we can help you replicate it...or adjust it to fit your space and your needs. Designers help those who help themselves. ;-)

Thank you for not hanging the TV too high. And for having the soccer game on. And what Grover said. Idea books. Look at the ways to filter here in Houzz, by style, once a few looks resonate with you (contemporary, transitional, traditional etc.) Idea books really help guide you and borrowing ideas can actually give you a plan and or shopping list.