I am sorry, Anna, I just couldn't help myself! No matter how much I thought about layers, I couldn't get the image of chooks and eggs out of my head!
Just in case my response was just too obvious I decided to experiment with some thread painting techniques. I don't think I have ever used so much thread in such a small space. Altogether I think I used seventeen different colours. It was definitely a challenge and there are some mistakes, but that is what learning is all about. I hope you all like Sunshine. She is undoubtedly a "Singular Layer".