Look at this differently: your goal isn’t to give good head, it’s to make your partner feel good. The Caleb’s of the world aren’t just “fucking perfectly”, they’re providing their partner with what makes them feel best. Your most important skill in this regard is to listen. You need to hear and feel what your partner is telling you, and adapt. At the end of the day all you’re doing is applying pressure, moisture/warmth, basic movements (there’s nothing too crazy you can do), and enthusiasm. You have to sooth and excite them mentally as much as physically, and these are the physical levers you have to play with.

If your partner is telling you that what you’re doing is great, then you’re hitting the physical areas fine most likely. You need to make sure you’re doing everything else too: they need to build to climax through appropriate foreplay (which could mean anything) and carried through that.

Understand what your partner wants, and you will be a god