With the fast development of open access publishing worldwide, Directory of Open Access Journals (DOAJ) as a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals, has been recognized for its high criteria in facilitating high quality open access scholarly publishing and used as the portal for accessing quality open access journals. While the numbers of journal application to be inclusion in DOAJ in Asia are kept increasing dramatically, many editors of these journals are not very clear about the idea or concept of the open access which have been embedded in the application form containing 58 questions falling into several different criteria categories. The very commonly seen misunderstanding of the required item, inaccurate or vague or incomplete and even missing information, poorly organized website, non-transparent process of publishing, especially no open access statement and copyright statement, or conflicts between the policy statements would cause much more communication between the reviewer and the editor and delay the completion of the review. This article gives an in depth introduction to DOAJ criteria and detailed introduction to the general process on how to register to DOAJ, suggestions based on application review also is given for journal editors to better prepare for this application. And it is the most important for editors to keep in mind that to be indexed by DOAJ is not just about filling a form, it is about truly change and adapt to best practices in open access publishing.