Bad day today...
After the alu, I have airbrushed Pébéo gloss varnish. Then I have masked the undersurfaces and I have airbrushed Tamiya XF-58.
When removing the masks...

The varnish did not stay in place in some locations. So I have a really bad painting result.
I think it's not the varnish that is guilty but better Tamiya alu...
Anyway, only one solution: to remove all the paint and redo the job, but this time green paint will be applied first!