There are many ways to do this but I will start off with saying that add in modern pieces like a lucite coffee table, or chair. Add pieces of contemporary art above traditional pieces of furniture. Perhaps add modern lamps on a traditional console or end tables. I love blending modern and traditional pieces together. Best of luck

Try monochromatic color schemes, and use solids more than prints. Switching from traditional print upholstery to a solid contemporary color will go a long way. Less is more ...

Thanks I appreciate your comments