how can i publish my drawings?

You need to convince an editor that you are talented enough.

For example if you want to make comic books. You have to go to a convention or a store signing of an editor or editor in chief. Sometimes even a writer. If the writer likes your work, he may contact his editor to "I want to work with this person". Or the editor will say, "not bad here's my card"

I'm sorry I have no information outside of submitting to comic books.

Also mail ins don't work hell even the people at marvel admits that they don't hire people from submissions. They usually hire people referred to them or people they had met face to face with portfolio. you may want to e-mail a link to an online album. You can do it that way as well. That would be best for art galleries.

good luck.