Mmm obviously the demand for traditional art is lower since it's not as clean looking and neat as digital, plus it shows flaws in the paper, etc. etc.
You would get more if your lines weren't so sketchy and if you'd erase your pencil marks C:
Not too bad, but a tip on your circular shapes (which I really give everyone)
Keep practicing drawing circles in one stroke. It's really essential to outlining and stuff, since no one likes furry eyeballs ;C
If you can draw perfect circles already and stuff, what I'd suggest for you is to get an INK pen, not ballpoint, since it'll reduce your need to make those sketchy lines. Plus... Ink pens and Gel pens (some types) are really neater looking in outlines.
Otherwise, they're actually kinda cute!