Do you ever once, create a design and at the end you realize that its not to your liking? Why is this? is it because you fail to understand what your imagination was thinking, or you just wasn't satisfied with the end results.
Designs are always a task of what your mind wants you to create. Sometimes its a passion sometimes is to try and make an impression that will be favoured. The real motivation is never give up, fit the pieces and fit them well, So that you can aim and achieve your unexplained task a victory!