"Some brands of oils tend to have more sheen than other. Some colours are glossier..the earths and oxides usually are most matt...what are you using?"
Same as before, the only few ones I have, Rive Gauche.
The pilot uniform, which is a mix of various colors (in order to get the final tone I wish), such as Naples Yellow, Raw Sienna, Titanium White (all these Rive Gauche), with maybe a bit of Olievert (this one Van Gogh), is too shinny.
The pilot's MaeWest (basically the same Naples Yellow as above, with a tiny little bit of an enamel red, for lack of an oil red color; funny they mixed well together adding a bit of White Spirit), is IMO a bit too matt (when from pics usually the Mae West is kind of at least satin, if not even gloss finish) .
"Grumbacher has a medium that helps matting.."
Didn't know that brand, thanks. Found it, and found the medium you mention. But this is an US brand, which makes it harder to import into the EU because of Custom fees and a lot of bureaucracy. Unless I can find it for sale in a local (or some other EU country) store.
"after some months, you can simply give things a hit of dullcoat.."
The same Dullcote lacquer from Testors mentioned above I guess.
"just let things dry ..really dry."
I understand that artists painters may need a long drying time for their oil paintings/canvas, as a lot of them seem to like work wet on wet.
But I don't find it particularly interesting in our case, meaning using oils for painting figures and busts.
It's been months that parts of my pilot (the main body, the arms) have been on the sun light every single day (when the Sun shows up, of course), and that paint on the uniform is still not fully dry.
I wonder for how long I'll have to wait in order to finish it... Apparently somewhere between 6 to 12 months I guess... Not very practical IMHO.
Cheers!
Dolf