When you find a relevant or interesting section you will need to slow your reading speed dramatically, allowing you to gain a more in-depth understanding of the arguments raised.
When was the work published? In this process, the reader is converted to a "writer", whether or not he writes or publishes his own ideas. Reading critically does not, necessarily, mean being critical of what you read.
If it is impossible to prove a claim wrong, it is also impossible to prove a claim right; the claim is instead a matter of faith. Studies are designed so that mathematical models can be easily applied to research contexts using experiments and surveys.
Critical readers seek knowledge; they do not "rewrite" a work to suit their own personalities.
Study the history of the argument presented in the text as much as possible. The judgments and interpretations you make of the texts you read are the first steps towards formulating your own approach. Every word is an important part of the text.
Scientific revolutions imply that one paradigm replaces another and introduces a new set of theories, approaches and definitions.