Thank you all for your heartwarming comments. I am trying out a lot of techniques as i go along and sofar i am not entirely dissatisfied with the results.
An update:
As i stated in my previous update i tried to apply some techniques on both the inner fuselage and the cockit seat and panel assembly.
First i have attempted what i believe is called a “sludge wash” on both subjects:

After some thorough research i have decided for this first time on creating my wash with water based paint. If it should fail i could always easily remove it with water… So i made my wash using about 10% paint and 90% water and added a drop of dishwashing agent to make the resulting heavily dilluted paint “more wet”. Without it the paint tends to form drops on your model. With it, the paint flows nicely in all nooks and crannies.[8D]

Here i am applying it onto the fuselage. The idea being the paint collecting into the edges and along the surfaces to create a dark “used” accent as if dirt has collected on those area’s. After applying the paint i waited for 10-15 minutes and then took a cotton swab (correct term? I am not a native english speaking person, sorry) and moisturized it (don’t make it WET, just moisturized). Carefully i removed some of the paint on the smooth surfaces and left it in the edges. The result is seen here:

As you see there is a very subtle effect achieved in the corners and edges of the inner fuselage, creating a “dirty” look. For a first time i am quite pleased with my efforts[8D]
Same technique is applied to the seat and panel assembly:

Then i moved on to chipping and drybrushing with aluminum paint to simulate wear and tear to this area as the pilot used his plane for a longer period of time. I took a sharp hobby knife and randomly scraped away some of the interior green colour, revealing the greyish plastic of the original parts. After that i drybrushed a bit with aluminum paint (revell) to exaggerate these area’s and some edges of things. The picture makes it more shiny than it really is because of the artificial light and flash used:

The fuselage won’t be chipped on the inside as i can imagine the pilot only using the controls, only creating dirt and not actually removing paint[:)]
That completes the inside of my model as far as i am concerned… On to the next stage: the engine!
As i am not entirely pleased with the “plastic aluminum” finish of the basic parts i decided to do most of the next steps in my build with first applying an aluminum paint to the parts. This creates both a more realistic idea to the parts and prevents me from having to drybrush aluminum accents after chipping/ scraping if i would so decide to do it.
Since i can be a bit lazy at times and i hate cleaning my airbrush after every little spraying session[:-^] i payed a visit to the local DIY market and purchased a large spraycan of aluminum metallic paint. Sofar using it is quite ok and i am considering using it even for the final metal finish on the outside fuselage (drying time only two hours!)
Soooo… first we cut out the engine and wing parts out of the sprues and clean them up from flash and plastic edges:


Now… how to spray these tiny parts without having to handle them…
Easy![:D]
We take a lump of blu tac putty (sort of…slightly different stuff) and create a high tech base:

we then add some even more high tech NASA endorsed wooden stick thingies [8D]that you use to make little snacks on parties and stuff:

and voilà, we have our high tech ultra clever spray station![^]:

(the parts that don’t have a convenient hole in them can be attached by sticking them onto a little lump of the same reusable putty clay stuff)
Progress from this point on:
First i coated the engine and the inside wing parts with my aluminum spraycan paint. After that i used my airbrush to add a layer of interior green to them. The grey part with anthracite accents in the picture is done with a common small paintbrush:

Sofar for today… Hope you peeps like what i am doing and trying out and i see you guys next time![tup]
Kermit signing out