thanks guys.
these effects to geo though I am not a specialist in anything I can give my opinion, I usually do it with oils or watercolors, because I like more is the translucency as you can give it to the airbrush though it can be taken lots of practice and time to do it, while watercolors and oil paintings grow very fast and is very simple to do.
Here I have tried to do with the airbrush and I was left alone as I would have liked in the front pit.
as in the p47 niggles I've gone ahead and when I wake up I'll put more pictures as I take at the moment.