It depends on the show.
Some are looking for perfection---even to the point of checking the blind stitches where you've hand sewn the last side of the binding on and will make sure that they can't slide a pinkie fingernail underneath the fabric between stitches.
Some just look for fairly well done, nice use of colors, or something unique and or outstanding.
Some it's just people choice so it just needs to be something with a WOW factor or humorous.