In the beginning I had some signs of being "emotionless". Just learning to play the notes without regards for dynamics or other things on the page. Today there is a bit more emotion just having the body sway from time to time and more natural wrist rotation to get closer to the notes before a big jump.
Day 1 I didn't watch online videos of the pieces I'm learning to imitate emotions. On the other, you see students playing beginner pieces online who are also learning like youself so you find a lot of things that you shouldn't imitate. They're focused on note accuracy so you won't see much emotions.
And there were signs of being the "posture guy". Not sure if this was influenced by the Canadian pianist Glenn Gould. In the beginning I wasn't a great reader and would look at the keys frequently. When playing late at night due to insomnia I would stick to familiar pieces and play the notes well. At the same time I'd be sleepy that my head would lean forward. Today I'm more conscious keeping my back straight even when I'm playing from memory.
People who are taking lessons don't normally imitate the "show off" guy. Students tend to limit their playing to the teacher's assigned repertoire or pieces the teacher picked as appropriate for their level. Otherwise they'd need to find pieces that are repetitive, easy to get into and at the same time look hard enough to convince others they have been playing for many years. Some self-taught people would find pieces way above their levels and try them anyway.