Spinning can have mixed results in a dream. If you spin too fast, you might end up destabilizing the dream because you're not able to focus on your surroundings as much. However, if you spin slowly, you'll be able to look around and take in all of your surroundings. When you spun, perhaps you just needed to focus more on your dream body than your surroundings for the time being; eg. rubbing your hands.
As for your second dream, I've personally never had issues with my dream body, but I can suggest visualizing your hands coming together, and imagine what they will feel like when you rub them together. Also, don't think of your physical body, or even the fact that you're actually asleep; this will totally throw off your attention towards the dream.
Sometimes you end up becoming lucid in a dream right at the end of your sleep cycle, so there's not much you can do there. Having a couple more lucids and being able to practice stabilization and dream control methods will really help; you're just figuring out how to do things, so I definitely wouldn't say you're missing something.
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