I'm thankful to Betty Edward for "Drawing on the Right Side of the Brain". This is the best book i've ever read on arts/drawing subject. First, it teaches you to see things as they are, without reasoning (mute your left brain). Hold on it (see details with your right brain). And then, it teaches you to copy what you just saw, again without reasoning. One could understand the true meaning of "Good artist copy, great artists steal" by reading this book.