Fiber, sewing machine, thread, 100% cotton

Sitting in a doctor's office admiring a Mapplethorpe orchid photograph, until I noticed the reflection of the windows behind me obscuring the top half of the image, once noticed I could not "un-see" this intrusion. This observation led me to a series of investigations where an object or objects are placed in a specific way to obstruct the viewer from seeing the underlying subject matter, in this case you only see the reverse, or backside of the work.
This image also puts on display the two aspects of using the sewing machine as a drawing tool, the straight stitch creating the right-angle grid. At the end of each line, the thread is pulled through the back and tied off 3 times. This relates to looking at the back of a tapestry and the fussiness of the image presented. Repeating the premise; once seen, can it be “unseen”?