Don't Distract the Viewer
1) The judges have generally learned to dislike borders. Borders are all too often placed around mediocre photos in an attempt to "dress them up". If you are considering a border, do what the judges do: examine the photo itself, critically and exclusively. Hold up your hands and use your fingers to temporarily hide the borders. If the photo does not stand on its own - without borders, then don't add a border.
2) We certainly support putting your own copyright symbol on your photos. However, if you are going to do this, try to keep the signature and copyright symbol from becoming too distracting. One trick is to color your font so that it works harmoniously with the other colors in your photo. Help your viewer keep his eye on your main subject.