While writing your evaluation essay, you should obtain supporting evidence in order to support your position. Your clear viewpoint should be taken with the supporting evidence showing the reasons for your opinion.

If you need to write your evaluation essay to evaluate a particular article or book, you must read the material first; you must provide the readers enough information for supporting your thesis. Thus, your first task is to read the material concerning the article or book and then conduct research on the subject.
In evaluation essay writing, it is necessary to access both sides of your issue. You need to find answer to the question, “Why does a particular individual feel the way he does.” For example, take the problem of various religions. If taking the diverse religious positions of the inhabitants of the same country, it would be necessary to present the reasons of each religious group. It is significant for your judgment to be balanced, because it states by various positions.
Also, you should make the thesis. Your thesis must be clearly presented. Evidence is necessary to support your thesis. Thus, you need to choose the key criteria of a problem and maintain it with some statistics, data, anecdotes, or citations. Evidence must present data and the interpretation of them for you to support your thesis clearly.
A good way to clarify the points of your essay is to utilize an outline. It is recommended to begin with some interesting fact, anecdote, or quote. You can present the supporting evidence, which can be used in the key points.