Upload & Sell: Off
I think you did a nice job with the first two. The thing about adding light is, at least in my opinion, simply to add some punch to the shot without letting the light look unnatural. In three, just below the guy, you see the line of light vs. shadow, and as HawksFan66 already mentioned, it's way too hot. You can see the shadows from the wheel of the bike from the light on the woman, but this light is just a couple stops hotter than the ambient light and isn't jarring in the way the light on the guy is. In this situation, I probably would have lit them both with the same light on camera left, just as you used on the woman.