Thank you all for comments. I'm glad you like it.
Modelmaker9, I used black for preshading and then Humbrol 66 as base color but it appeared grey (supposed to be olive drab) effect can be seen
here so I used Testor's OD as base color. Then I applied gloss coat ( floor polish), decals, wash (Testors enamels), flat coat, drybrushing. At the end I airbrushed dust (Pactra acrylics). To paint fabric I used Testors Field Drab + wash and drybrushing.