Really amazing TomM! The picture has soooo many details. e.g. the small spots on the exoskeleton. That's really a great piece of art! No criticism from my side!
I have a clip on 250 but don't use it. My Olympus set up is very small and light and the Raynox added a lot of weight and effected the handling of the whole set up also you are adding another piece of glass. I find I can crop with the Olympus or use my Laowa macro lens and this I prefer.