Looking at your page, I like the three picture sets. While the "Dad guy" doesnt have his bike he has a helmet.

The other two have their bikes visible, and they look good.

The two bottom pics are also good, focusing as they do on the bike.

The suit guy has a funny blue blob on his suit, what caused that?

But the whole white-space thing, which I usually like, is not working for me, but not having a graphic imagination for creating stuff like that I cant suggest anything better.

z