The biggest gripe I tend to have with your sigs are your borders on average. Either I think the color clashes a bit much or else I think it is too thick.

And I concur with your assesment on the Knuckles one. It is too busy and blurry might help.


The background is a bit.... well simple I guess is the best way to put it. However, simple itself doesn't make it bad it just makes it so it doesn't stand out as much in my mind. Maybe try a more complicated background next time.