Re: Can you help???
In terms of overall style. First. The bike was definitely lit on location. Looks like a bare flash somewhat centered above and high in front of camera.
For post processing they really pulled the back point up as well as pulled the white point down to kill a lot of contrast in the image. Outside of that, I'd say just basic clean up on the bike and probably some kind of vignette underneath your curve to shift up the black point.
Your layers should go from bottom to top. Original image, clean up layer, any dodge and burn you want to do, a curves for the vignette, and then a curves on top of everything that bring the black point up. You can also do this with an Exposure layer and increasing the offset