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These are the message and feelings the logo should convey in order of most important to least important,
Some of these go without saying but I'd like to insist on them from most important to least important,
Here are some inspirations.
I like the simple design and the leaf. From http://www.fabre.co.uk/wp-content/themes/fabre_cms/images/plus_bonsai-logo.jpg (the link is now dead).
I like the brushed art logo. Do not like the fontĀ at all. This came from http://99designs.com/logo-design/store/14196