You posted this comment on a picture someone did of the guy from Breaking Bad:
Hey man, just wondering how you photograph pencil so well! Your blacks are well.. black!
I didn't do that drawing, but I can give you the answer... you just need to enhance your photos with photo software. I use Photoshop Elements 7. I think it cost me $50, and it does everything I need. You can get it as a download from a bunch of sites.
If you get it, or a similar software, you go to "Enhance," and then scroll down to "Adjust Lighting."
Hope this helps.