Don't Design Without a Plan
Every space has its own distinct style and purpose, and it's important to figure out what that is before you begin to decorate. Even eclectic-style rooms have a cohesive design theme that holds them together. Without any overarching purpose or theme, a room quickly becomes chaotic and adrift. You don't need to know exactly where each piece of decor will go, but you should have a general idea of what you want.