H1 – varnish – rust

Moin together, on Saturday I spent a few hours polishing my Heinz Premium Bj. 2011 properly, cleaning thoroughly inside, letting summer tires open and and and and. The car looks almost again despite smaller scratches (doesn’t seem to remain with three children) just like fresh out of the factory. I noticed two things however: 1. The paint looks somehow like orange skin. Therefore as layman the question: Is this normal or does it say something about a supposed mind 2. At the lower transition from rear window to tailgate, where the water usually stands, the car has rust – and already with small bubbles. Has any of you already noticed such a thing? Greetings