I have been notified of increasing usage of my comics: "How to dispose your mask correctly" pasted at public spaces, such as lifts and near trash bins. However they were often edited, without proper credits to me, and with their company logo on top of my artwork. All comics that I drew are copyrighted artwork. While I allow usage for non-commercial purpose, my credits should be there and the artwork unedited. If companies would like to put their logo on my artwork, or replace my trash bin with theirs, they must contact me for permission and purchase of rights at evacomics@gmail.com . Otherwise it is considered as copyright infringement.