Charcoal Mordekaiser Drawing

I did this Mordekaiser in charcoal for my fiancee the other day to cheer him up after a bad day. It's his favorite champion. I think it turned out really well because of the way him as a champion looks for the medium, allows for a good representation in greyscale. I don't have a scanner so that picture is taken with my phone. A friend said I should do more of these, thoughts? Suggestions on champions/skins that would look good for the medium. I'm not as skilled as most of the other artists on here, but I'd love some feedback and suggestions, whether it be skills to work on or who to draw next.

Thanks much.

• Bekka aka Gravity Kitten

UPDATE -
Just did a Veigar in the same kind of style I accidentally drew it on the back of the charcoal paper so it has the lines going through it but lemme know.