Planning your space is not as simple a grocery listing your furniture to purchase and check off one by one. Before starting, try an exercise of painting a picture in your mind and adding design elements to imagine the end product. Not only the big furniture pieces, but the art, colors, rugs, layers, everything! Once you have that completed room in your head, then it's time to start buying.
Figuring out your unique design style starts by asking yourself a LOT of questions. Learn what it is that you already like, and put that into a plan that is current and beautiful. Tour your home and remember the things you love about it, and WHY. Check your closet to evaluate your style. Look through Houzz or home decor magazines and just circle what you like. And always trust your gut.