As a graphic designer who specializes in information systems and has an intense interest in language as a communication device and the way that visual systems can help us better learn foreign languages (and who happens to have studied Japanese), I'd like to ask what you define as a "well-structured, informative poster." What structure, exactly? Is there something in the order of characters that makes this poster particularly well-structured? Your poster provides no context, no hints at stroke order, only one each of On and Kunyomi (?), and Kunyomi is presented as a word fragment. I'll leave it at that and say I would not buy this poster as is, or recommend anyone else to.