Composition: Nice use of small number of leaves/branch in the background.
Technical: Really like the DOF.
Overall impression: Might have tried a border myself, but looks excellent as it is. 8
Nice work - the shallow DOF really makes the orchid stand out. Colours and focus are good, however there is a little bit of camera shake (most noticeable on top left petal). Other than the camera shake though it's quite a good photo.