I got it from this thread http://originaltrilogy.com/topic/The-Retro-Star-Wars-Thread/id/51402/page/2
…however, the original image seems to be gone. It was definitely a Japanese promo artwork of some kind. It probably looks like MAD because of his drunken smile, which is why it is my avatar in the first place 😃
Was it from this piece? http://s637.photobucket.com/user/define999/media/define999013/mural_Japanese_star_wars1.jpg.html
I’ve been digging trying to find it, and that’s all I can come up with. No pics of the adjoining page.