The Chips theme song is playing in my head...
This is a good example of why art teachers always tell students to paint from real life whenever possible, rather than using photos as their only reference...the camera lens has flattened the perspective and given an unrealistic look to the man's arms. There needs to be a great deal more foreshortening in order to give the image the proper perspective...in other words, his torso and head should be made smaller and hands larger.
I like the reflections on the bike and the technique you used really accentuates those. It would be interesting to see those reflections repeated in the man's sunglasses as well.