Ok it was late and thus a bit monotone, and a few errors for you to spot!
The idea is to show you how to create a simple tree from above with shadow. Its a starter for you guys to build upon so the detail is basic for that reason. A foundation if you like.
It took a long time to work it all out so it has some value to me (at least). So i will share it with Greenwich Students LA and Garden Design, to give you guys something to work with. Really appreciate if you don't publish this video, download it by all means as it won't be up forever.
Come back for updates.
Original Vid below.(Update May 2014)
Photoshop CS5 Graphic Trees from Grant Beerling on Vimeo.