Here are some photo's of trees that I find inspirational - none of these are mine.
A lot of these were created by a Austrian/German guy named Walter Pall.
(click image for larger view)
Japanese Maple
Japanese Maple
Japanese Maple
Japanese Maple
Bald Cypress
Japanese Cedar
Japanese Maple
Norway Spruce
Dwarf Scots Pine
English Oak
European Larch
Bougainvilla
Walter Pall's garden
European Larch
European Larch