I think they all look excellent - well done!
With respect to the little studs all over the Shaltari ships... I think that's why washing them with darker colours over a lighter base is popular!
If you gloss varnish before you apply the wash, you can wipe the paint off the raised nodules more easily before it dries, and that saves you picking them all out again later one-by-one. Matte seal at the end to kill any gloss, although the gloss on the studs might be an interesting effect that you want to keep.