Looks like and interesting image but IMO doing a SBS and uploading a hi-res would have helped you get a higher score.

sugggestions:
1) should darken the lower part of the vehicle, especially the last wheel behind
2) change color of the second vehicle to create contrast

great sport, take me there

The background lighting is inconsistent with the contest source.

Notice how the wheels of the vehicle are fully lit? Yet you have both versions riding over rocks that are in the shade. Just doesn't work, visually...

Consistency of lighting and shadows is hard, but is one of the most important things in almost any entry in these competitions. You can try lightening the rocks with the Dodge Tool, or find another beach background image to use that does not have such obvious shadows beneath the riders.

This dude is cool having lot of arms and nice ride too. lol!

Author, the links from the sources 1, 2 and 3 are the same as the one from source 5. Please change the links, so people are able to see the sources (before the entry will be removed).

Moderator, thanks for pointing that out, I did not see your message until after entries closed so I cannot update the links but here they are
1 car - http://mrg.bz/jLjbXL
2 cuddly monkey - http://mrg.bz/Zzu7Mo
3 fist - http://mrg.bz/sYqYfF
I hope that will do