Color, patterns and textures can add a lot of drama to your decor. Here are a few suggestions to go by when you are trying something new:
Patterns and Solids - Keep the strongest pattern you have on the floor (rug), then bring out the colors with small pieces in the room. Make sure something that is solid in color touches all your patterned pieces. This will help ground it and keep it from being too busy.
Layering Works Wonders - Having a beautiful, colorful rug can be more expensive the bigger it gets, so try layering a smaller, decorative rug on top of a more solid or plain rug if you want it to cover more space. It will be less costly and still be pretty. Also, layering pillows the same way. The fancier/prettier the pattern, sometimes the more expensive the pillow, so layer them with less expensive solid pillows too. A little can go a long way to bring bright drama to a space.
Use a Deep Color as a Neutral - Having a set neutral color that grounds the space is a good plan, but, instead of black, white, beige or gray, try a solid, deep color like a navy blue. Make it the "neutral" in a room and see the depth it brings to a space.
Emphasize Architecture - Bring out the details in your space by painting the trim a different color than the walls so that the detail stands out. Or if you have columns in your space, paint them a different color. Have some nice detail around your windows or special moldings? You get the idea. When you use your color imagination, there is nothing you can't do to add some tasteful drama to your space!