As I just had an incident of someone not knowing what common courtesy is and also apparently not able to read my description where it clearly says "DO NOT USE OR REPOST without permission!", here is a formal and official journal.
You are NOT allowed to use my art in any way without my written permission unless you are the commissioner.
That includes but is not limited to:
Referencing
Tracing
Roleplaying
Cropping
Reposting
Thank you and have a nice day.