There are links to your Ask thread and Wiki page, both of which are quite straight-forward and helpful. The meat of your signature is the picture of Toad, which has very nice quality and a smile that either says "I'm an oblivious moron" or "I'm up to no good." It is also very well-centered. 9/10
You should try making your "Ask Thread" url include your Shovel Knight GIF too, that way the flair that's taking up the majority of your signature also has functionality. Just a suggestion, of course.