In short, the answer is MINIMALIZE!
You come by your style by learning what to leave out. At first you tend to overwrite—embellishment instead of insight. You either continue to write puerile bilge, or you change. In the process of simplifying oneself, one often discovers the thing called voice. – BILLY COLLINS
The quote is from a writing site, but the advice applies to fashion, decorating, or art in my opinion. This makes me feel like cleaning my house and throwing all the junk out.