Use something other than MS Paint. Get GIMP or Paint.NET or something. After doing the above, use anti-aliased fonts. Make sure you clip the image down to eliminate large blocks of blank area which are not part of the original image.
Not too bad; also make sure to convert it into a different format: JPG introduces artefacts, which are clearly visible on this picture. You can use the format of whichever program you're using while working, and when you're finished you can export it to .png. Personally here I'd have tried to keep the [ ] signs and possibly use different fonts/italics to differentiate between the rapers and the pet.