I thought I would post another Purple Diuris orchid that I photographed last year. Even the slightest breeze can tend to cause movement in these orchids.
Beautiful image. I like the fine details. Normally I dont like dark backgrounds but in this image the BG helps the image stand out.
A fine point for improvement would be to trip off a little of the top since the material above the orchid doesnt do anything for the image. I like to have slightly more space below the image then at the top to balance the image.