Guys,
Experience helps but sometimes the more experience someone has the less open minded they are. I think being a good teacher of the game requires an open mind, flexiblity, creativity, and patience. I think really good players may have a harder time understanding how difficult it may be for the average little league or high school player to translate concepts to actions. In that case patience can really be an issue. This reminds me of college at University of Illinois, in most cases classes were Lectured by Professors and taught by TA's. In the majority of cases, the decorated, published, tenured Profs were out-taught by first year grad students who's knowledge couldn't touch the profs. A good instructor can find ways to translate these concepts to the simplest form for their students to avoid excess mental "clutter".