A couple of in-progress shots of a small acrylic colour study that will be the basis for a pastel. I had done the same scene previously this year in pencil. It depicts the Spitfire Mk Ia flown by Pilot Officer JC Dundas of No 609 Sqn, 1940.
You've captured a very nice sense of light in the painting Norbert.              Composition looks good too. The aircraft look like they will need to be in shadow and rim lit.
Thanks Kevin, Mark, Steve and Neil. Here's an update with some atmospheric shading and tones added for some heightened subtlety. Will add some bombers in the background, mustn't forget the prop, the serial number, and perhaps a few indications of panel lines, although this is very small, 7" wide. The yellows are stronger here than the original, overall the image is more saturated but relatively close, colours really are tricky to play with when it comes to screen images and printing.
That is Bold skyscape,very rich colours & yet the painting has a very calm  relaxed look to it              When you said you were going to add bombers to it i thought you might over do it, but turns out to still be a very calm painting              I like it
Hey Norb!      This looks pretty cool! Like the overall look you have going on. Plus I wanted to say that your latest work on your blog is wonderfully done! Nice work!              Brian
Thanks Brian, I hope that I will be able to translate it to the pastel. I'm actually thinking whether or not to do it up in acrylic or gouache as well, although pastels are quicker. Each medium has it's pros and cons!
I like the atmosphere and composition.        I'm just wondering if the position of the bombers is a little too level to the Spitfires to justify the wingover by the Spit on the right? I'm not a pilot, and stand to be corrected by those more knowledgeable than me on this, but with a wingover manoeuvre like that, I would expect the aircraft to be diving quite steeply after that and thus lose valuable height. If so, then the bombers should be positioned lower than the Spitfires.
Thanks for your comment!              Great observation. I also am not a pilot but your observation does make some sense when you think about it, with regard to the height of the bombers. If some light can be shed on this I'll be certain to position them a bit lower in my final rendering. Or I will simply reduce the banking angle on the distant Spit.