bmx...

I hate the power lines in the first image and there seems to be a fair number of shadows, did you use any flash at all? If is were me, I'd crop out the lookie-loos on the edges, they are distracting.
#2 is your best one.

i couldent do anything about the power lines and still get a decent angle. i never use flash unless i absulutely have to, i only have a vivitar thlystor auto flash and i am not quite shure how to use it really, i just dont understand how to balence the ambient light with light added from the flash, tell me how and i will try it

Set up the flash, take a shot, see how it looks. If you've got the flash on a remote setup and it's too bright, move it further away, or turn it down if it's adjustable. If it's on the camera and not adjustable play around with the exposure to see if something looks good. Have a rider just sit still in the place you want to photograph them while you work out the settings, rather than tiring them out while you're experimenting.

I really like #2, but it would have been brought alive by an off camera flash to the side.

thanks next time i am out shooting i will give that a try i have to pick up an off camera flash trigger but that shouldent be tough to find for cheap (yay cheap ebay resellers)