Trying new processing and I just bought these shoes a few days ago too so they deserved some attention. ;)
here's how I made the border(which I'm freakishly proud of. lol):
added an "invisible" border to the canvas by choosing "canvas size" adding pixels but not in any color. got that checkerboard thing and painted slightly around edges with black. lots of it in the corners though. then used the photocopy filter.
My favorite part of this, other than the way cool border (and I don't think I have a "photocopy filter" so I can't try it), is the cord and the outlet. Somehow that makes the shot for me. I know, I know... I'm weird. Oh, and you can WALK in those things? I'd break ankles and other things...