Excellent start, IMO. In the first one, the graffiti face seems to be reacting to the face of the guy walking past. In the second one, you have an older person (occasionally, and in some contexts, referred to as a dinosaur) flanked by two dinosaurs. The third one seems more of a kind of metaphor shot: reflecting on people who walk while using their phones.
They're all good street shots and if you keep looking out for (even slightly) unusual situations like these, you'll get even better very quickly and build up a good collection. But don't limit yourself to unusual situations as they obviously don't happen every day and you might not spot them if they did. I must have seen literally thousands of good street shots that I couldn't get because I wasn't fast enough or someone else got in front of my camera.
Anyway, I'm really looking forward to seeing more.