Not bad at all Ryguy
To spruce it up a bit more try adding some depth to it by adding a new lyaer then apply image, then filter > Sharpen > Sharpen Edges. Then apply image again and then Go to Filter > Blur > Gaussion Blur. Make it around hmmm lets say 1.5px. Then erase around the focal with the eraser tool on about 7% Flow. ( Flow is in the toolbar at the top for eraser.)
This will then add a little bit more depth. As well for making it a more vibrant and eye catching sig just make a new layer then apply image and then go to filter > Other > High Pass and set it to overlay. Lower the opacity to what you like.
That should get you started on improving it a bit more