Here is another terrestrial orchid whose petals are white. The name of the flower, based on the information on the internet, is Spathoglottis plicata. I made this artwork using Staedtler 2B pencil and Derwent watercolour pencils. As you can see below, I gave black strokes of graphite pencils as the background of the drawing but for the purpose of uploading the image into my zazzle store, I removed its black background using Adobe Photoshop.
White terrestrial orchid
It is now available on various products of Zazzle. One of them is the iPhone case presented below: