"All my books were easy to write - doesn't it show?"

This quote by Daniel Pinkwater suggests that the writing process was relatively easy for him. He is indicating that the ease of composing his publications is indicative of his skill as a writer. He is recommending that the truth that his books were simple to compose is a testimony to his writing capacity. He is additionally suggesting that the top quality of his publications is an outcome of his composing ability. He is proud of his composing capacity and also is suggesting that it is reflected in the top quality of his publications. He is suggesting that the simplicity of creating his publications suggests his skill as a writer. He is suggesting that the top quality of his publications is an outcome of his creating capability which it is easy for him to create.