i have 3 large junipers (sand cedars)at our herb farm.dad cutt the tops off for christmass trees about 30 years ago.they stand 20-30 feet tall.ive benn doing bonsai for a few years with my potted small trees but never done a large one.i started air layering one of them ,i think it will turn out pretty nice.verrycool to style a tree up in it about 20 ft. off the ground.

anny one ever done a large field tree?anny advise or tips?should i treat it like a small tree,or should i take special care becouse of its size? thanks for the help.