You can use my works without asking to me AS LONG AS you put proper credit (“made by @yussuna + link to the original post”).
(You can use for edit too, but you need to put @yussuna in the edit, like “drawing by @yussuna”)
Of course, it’d be better to tell me for I have some idea of who is using, and it can make me happy in some cases (like, if you dub some comic, I’ll probably be happy). So contact me~