I was told the best thing a quilter can do is take a snapshot of their quilt and then to really look at in the photograph... because the photograph is where the flaws will jump out at you. A commercial product photographer told me that when he felt the product display was ready and the lighting was the way he thought it should be, he would take instant Polaroid shots (before digital cameras) to look at before he took the final shots.... to be sure everything was placed correctly and that there were no weird shadows etc.... He said the snapshots focused his vision and block out all the extraneous things. It would bring everything into focus better than looking at it directly. Several times I'd see him go back and re-adjust the display before using the studio camera to take the "official" shots. He was correct.
So before posting a photo (or doing the final quilting on your quilt) take a snapshot to be sure everything is the way it is supposed to be.