1. nice shot, love the feel.
2. flare needs more diffusion, if it was much brighter but more diffused across the entire image it would fit in more, right now it just catches your attention but looks out of place with the rest of the image (not a bad shot, just some critique for future edits)
3. nice shot, love the lighting, feel and composition.
4. nice shot, but same issue with the flare, its too warm for the rest of the image and to concentrated, less is more 99% of the time.
5. really like this shot too, but watch the hotspot from your lights in the helmet reflection, this is nitpicking but my eyes are drawn straight to it, if it was all nicely lit carbon instead it would have been stellar, though still really good, love the comp.
6. very good attempt at a stationary motion shot. areas to watch: primarily the shadow on the ground. Im seeing separation between wheel and ground, could use a little extra time with the burn tool to really blend in the areas just beneath the contact patch. Other than that I would also put a very slight gaussian blur in the background behind both wheels with just a slight draw down in exposure, right now the wheels look 100% transparent. Overall nicely done.
7. nicely done.
8. good idea and pretty good execution. Love the overall feel. I think the flare is a **** much but thats personal preference, there have been many occasions with personal edits that ive taken them to the "way to far point" according to others. From a technical aspect however, matching shadows: be careful with composition that involve multiple subjects being lit at different times. The shadow from the bike doesnt match the shadow from the person. Seems like you light the bike at around 45 degrees to camera right, and more or less looking down on the bike, with the guy you seemed to have light him more from the front than the bike, giving you a shadow that falls more towards the background than 45 degrees like the bike. Having the light blast more of his front side also gives him a less volumetric look, making him look a lot more wider than he really is (almost fat around the belly with the concentrated highlight around that area: draws too much attention). The neck as a result is also lit a little weird, no light falloff at all, no shadow area whatsoever. Next time see about using a little rembrandt lighting on the subject to make him/her a little more dynamic, get the light more to the right, and up over the head looking down, with a large diffuser it will give you nice smooth shadow areas which will give your subject more definition and "umph" if you will overall great image though, im sure he loved it.
Hope that helps