The different types of eraser and how to use them. How to draw with an eraser, and effects that erasers can achieve. Kneadable erasers, Blu-Tack, vinyl art erasers, techniques, and more...
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I wanted to tell you how spectacular I think your new book is! There are any number of beginners books out there - many of which I have read - but yours covers basic techniques and goes far beyond to give insight to more experienced artists. You clearly explain everything along with your reasoning, which is invaluable. The book has so much information that repeated readings will not only be worthwhile, but a pleasure.