1. Choose a suitable journal: First, you need to find a journal that accepts open access articles. These journals usually make it clear on their websites whether they accept open access articles. Some well-known open access journals include PLoSOne, BioMedCentral, OpenAccessJournal, etc.
2. Prepare the manuscript: Make sure that your paper meets all the requirements of the journal, including format, length, citation style, etc. You may need to write a short letter of introduction explaining why your research is important and why it is suitable for publication in open access journals.
3. Submission: Most journals accept online submission. You need to follow the instructions of the journal to complete the submission process. This usually includes paying a publishing fee (if any) through a secure website.
4. Waiting for review: Once your manuscript is accepted, it will enter the peer review process. This process may take several months. In the meantime, you may need to revise your manuscript according to the reviewers' suggestions.
5. Publish your paper: Once your paper is accepted and all the revisions are completed, it will be arranged in an upcoming journal. Then, you can find and download your paper on the open access platform.
Please note that different journals may have different submission and publication processes, so you should read their guides carefully to understand the specific requirements.