All that Sparda has mentioned
I would remove his face from the sword because it's only confusing.
Move the text closer to Scorpion, it shall be a part of the focal.
The end of the pen tooling is a little wrong, at the tip of the sword it shall go behind the sword in order follow the right pattern. You also have a issue at the middle of the sword. It shall be over, under, over, under and so on...
Maybe change the color of the lines or make it a clip mask.
Fix those issues and you will have a decent signature![]()