First finished thread post?
If you mean the order of the gallery... in the last Muscle Bike BO it was listed in the order that we finished our bikes, and Chad is correct, the FIRST picture in your FINISHED bike thread needs to be the one you want used in the Polling Gallery. You can also edit your own finished bike thread until the Polling Gallery goes up. Then the picture is locked in, (in case you've made a thread but then take a better picture) hopefully that clears it up, as long as the rules didn't change...