A bit late, but yes, the rudders look like they are spot-on!

Nice masking, my friend @lis!
Hope no peeling takes place upon mask removal!

I am wondering about the color of the antenna mast. First, however, you will need to paste it in before painting the plane completely. Thus, the color version other than silver will be difficult. Besides, the few photos of the silver spitfires do not indicate that it was in a color other than aluminum. Photo of very interesting Spitfire IXc (pilot Wg Cdr Marian Duryasz).

1 attached image. Click to enlarge.

@fiveten I guess that's what I will do

Since you'll use cyano, It is not a bad idea to glue it before painting the fuselage, my friend @lis.
However, keep in mind that the glued antenna will be quite sensitive...
This is the reason why I glue all these thingies at later stages, even if I will have to use cyano...
Decisions, decisions...!

Hi @lis. I also tend to glue the small bits, like antenna posts, after painting. I have found they break off at the slightest provocation, fall into the carpet, and are never seen again. I think there is a large pile of missing parts living in one corner of our hobby room, waiting to be discovered. I also think that our cat has a hidden mound of stolen treasures waiting to be discovered one day. In any case, when you decide to glue the mast, it will need to be a solid connection.

It might be primitive, Lis @lis, but as you said, very effective.
Small parts like antennas, mirrors etc, I also try to mount them at the end of the build.