Take a look at the angle of the shadow on the wall. Use that as a guide to fix the truck shadow. And please post your original uncut photo in a SBS.
PS: If you do revise the entry, also try to get rid of the obvious clone stutter.

hehehe, explain THAT to the insurance company. Just toss the original photo in the SBS author, easy peasy. As long as you didn't use any other sources you should be okay, but of course a mod will contact you if you need to fix anything.
Also you may want to give it a title (Just click the title in your entries under your profile and it will let you edit it). A title helps often in voting because it gives the voter and idea of what you were going for.
Great chop with a very nice photo

Please add the uncut photo as a step in the Step By Step.
Please read http://www.pxleyes.com/guidelines/photoshop/
For more information about sources see this Forum post: http://www.pxleyes.com/forum/viewtopic.php?f=5&t=5644 

Now we can see that the shadow would be almost the same as in the original photo. Look at the light source (angle of shadow on the wall) again to correct.