The possibilities with one simple orange, as a still life, is numerous.  One can do many things with the arrangement of the peel to come up with various compositions.  I also used this to practice a live presentation/demo on Instagram Live.  I had completed most of the painting and then decided to put the final touches on live video.  I am planning to do a simple demo tutorial soon on Instagram Live.  After all the best way to learn is through teaching.  Enjoy!