making a graphic look clearer

okay so i scanned an image (a little tag i drew) and played around with it, making it only two colors, by using the threshold adjustment. keeping the image the size it is, how can i make it more crisp as if i had just drew it in photoshop without actually re-tracing the lines?

... if that makes sense the way i put it...

here's the picture:


someone could just do it for me and i'd be satisfied.

..You can do it with the path tools, that could be the most sensible way. Other than that, I guess you can give it a gaussian blur (by 2?)?