Digital work. Like photoshop editing and other stuff. Clearly you didn't, as you just said you only scanned them, so details aren't necessary.

And your drawings are *not* bad. They're pretty damn good, actually. But I pointed out what I considered the flaws, out of respect, actually. As an artist, I personally hate trying to get honest critique to point out the flaws in my work. All the "that's really good" gets on my nerves when what I really want is someone to tell me how to get better.

But if everything I found lacking in your work can be summed up in a couple sentances, then you're doing exceptionally better quality than most.