Visitors - stage 2

Made a start on the sky today, I would normally try and get the whole sky done in one day but with this picture, the sky occupies three quarters of the whole painting so I will have to do it in stages. I chose a yellow/violet complementary colour axis for "Visitors", the colours used (all Michael Harding) are as follows:
Ultramarine Violet, Ultramarine Blue, Kings Blue Light, Pale Violet, Permanent Orange, Lead Tin Yellow Lemon, Naples Yellow, and Zinc White.