Tolga, beautiful cockpit! Impressive detail on this kit, and you're doing it proud. I suspect the cowling wasn't all that a good fit, in actuality.

No need to rescribe the panel lines, they are still existing.
Due to sanding process some of the fastener on the surface of cowlings are lost. So it needs to be replaced.
For this replacement I have used Archer fine transfer surface detail set.
6-7 fasteners re created by using Archer fine set. After the painting it seems that it s Ok now.

10 attached images. Click to enlarge.

I never heard about this before.
So it's basically rivets, fasteners, etc. made of resin on clear decal, as I have just googled. Cool.

And now it s time for painting .
Lower surfaces painted to Medium Sea Grey by using Gunze acrylics.

1 attached image. Click to enlarge.

I have started to paint upper surfaces. Firstly "Ocean sea grey" from Tamiya.
Next step will be RAF Dark green as usual.

2 attached images. Click to enlarge.

I see you evidently solved the ill-fitting cowl pieces nicely...and that Archer set looks like it'll save a lot of time - AND look good besides. I'll have to keep that little suggestion in mind.

This MkIXe will be finished in Turkish Air Force markings.
National square insignias on the wings are painted by masking.
Flag on the tail is from Turquoise decals.
Code numbers are home made from a friend ( Thanks to Kursad Albayraktar)

5 attached images. Click to enlarge.