Lovely model Felix, I always prefer the short nosed 190's to the long nosed ones. Not all of us have the luxury of access to an airbrush and you've done a gteat job of trying to simulate a spreayed on effect. You might find that you can get an even softer effect if you 'dry brush' the mottling and work on each painted spot until it looks like it is sprayed.
You will also find that using masking tape, even with brush painting, will give you the appropriate straight edges to the camoflage on the upper surfaces which were so typical of German WWII aircraft.
