Ask Eric Stromer a question here.
I don't know the key to success, but the key to failure is trying to please everybody.
These two web sites answer your question.
http://www.oregonlive.com/hg/index.ssf/2009/01/how_to_prune_a_japanese_maple.html
http://www.ehow.com/how_4523430_trim-japanese-maple-tree.html
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