We have uniform shirts at work with a patch of our logo sewn on. We have a new logo now. I took the old patch off and it has made an 'outline' in the shirt where the logo was sewn on. The new logo is more narrow than the old logo so the thread holes/stitching show from the old logo. Is there anyway to smooth the old thread holes/stitching out so the outline/thread holes of the old logo doesn't show.