Ok, here are some news!
Ok this is the way I did it!

I replaced the tape in a different manner.
Sprayed some green on after worn effects. And made scratches.

Airbrushed some varnish (Klir) and Worn Effects and Red.

Removed the tape and finished the scratches and coated it again!




Some spots of paint have gone through the tape, but I will fix this with a brush!

Do you like it? I feel content with this, I must say, but I need some expert eyes and critics!

If you want to read the whole article feel free to check it here:
http://alexbenvenuti.blogspot.fr/Alex!