If the journal’s editor-in-chief has invited you to review a manuscript, please consider the following:

Reviewing a manuscript critically but constructively and preparing detailed comments about the manuscript to help authors improve their work
Providing all required information within established deadlines
Making recommendations to the editor regarding the suitability of the manuscript for publication in the journal
Reporting possible research misconducts
Treating the manuscript as a confidential document
Not making any use of the work described in the manuscript
Not communicating directly with authors, if somehow they identify the authors
Not identifying themselves to authors
Not passing on the assigned manuscript to another reviewer
Ensuring that the manuscript is of high quality and original work
Informing the editor if he/she finds the assigned manuscript is under consideration in any other publication to his/her knowledge

What should be checked while reviewing a manuscript?

Novelty and Originality
Scientific reliability
Valuable contribution to the field
Ethical aspects
Structure of the article submitted and its relevance to Authors’ Guidelines
References provided to substantiate the content
Grammar, punctuation, spelling, and referencing and citation style
Academic misconduct