I am a Thai student who is studying in a Master's degree of Science, Mahidol University, Thailand. I would like to submit a paper for publication in a PLOS journal and wish include your image (https://commons.wikimedia.org/wiki/File:Thailand_Isan.png) and modify it into my version. To grant the permission, could you please contact me via Email: Manomat.firstname.lastname@example.org. I will send you the request for permission to publish content under CC-BY license file and the image that I modified to you. Thank you for your consideration, I look forward to hearing from you.
Best regards, Jipada Manomat