I want to take my line drawing and have the software sharpen and smooth my lines for a printable image.
If you want to apply image correction, then you need an advanced image manipulation software. For this procedure, I recommend GIMP or Adobe Photoshop. GIMP is free while Adobe Photoshop is shareware/trial.
Once you choose to install any of the software, use its name along with image manipulation tutorial on Google to see how to apply modifications to your images.