Please don't submit "7 seconds of the whole trailer." If it's too big and it's kicking your butt, then why waste effort on a trailer. Put that effort into the movie so you're not making double work for yourself.
As for thhis, 7 seconds of walking (in a loop!!) isn't What Newgrounds is about. This is a pointless flash, and if it passes, it'll be floating around Newgrounds forever, since you can't easily delete things here.
Well, sir, if you really feel that strongly about this, then I will not submit another movie until this 7 second clip turns into a 1:11 clip. And I will animate it day in, day out, for however long it takes me. If the finished product still doesn't meet your standards, then I don't know what will. Thanks for the feedback.