Hi enax, welcome to the site,

I have to agree with the Baron dont be too hard on yourself, for such a large model and to be painted with brushes alone is no easy feat, and you should be very pleased with your efforts, about primers its for is the most part down to the modeler though some materials like resins can benefit from a good primer coat, but its not the be all and end all. Sometimes a good base coat of the color your working with can do just the same job.

The only thing to remember, is to enjoy yourself, and always take a positive on every build as we learn more and more with each build.

I think your skills are very good indeed and there's plenty of good folks here on SMA that are happy to help out with tips and adice,

great build, keep it up

Shane