Finally finished. WIP thread here:
The airplane is built OOB except for some small modification. The paint I used was Gunze Mr. Color, a solvent based color. Painting was done in four steps:
1) apply a layer of Mr. Surfacer 1500 primer;
2) making preshading with brownish black ;
3) basic painting, but with thinned paint so as not to fully cover the preshading;
4) weathering with Winsor Newton Oil color
Here comes the reveal photos: