I like it
Are they supposed to have lines for their skin, or is that the "style" of the comic?(floating eyes with hair helping to define the face outline)- because if it is, it won't work too well once you put color in the background- forcing you to stay with hues(black and white) or abandon it...
The eye expressions are prime, the clothes are simplistic(no wrinkles anywhere?), as with all new artists, the hands need some work(the hardest thing to accomplish), and you may want to define the two males with different features, ie different hair style/color, different noses, ect, to avoid confusion.
And, of course, if that was scanned, you'd want to clean it up by using a program to trace your scanned image(i believe photoshop does that), and will definately want to work either on your lettering or use/
purchase a computer font.
Also, the head on the clark character is a little big, even though theres no outline.
But it looks really well done- i'd be interested in seeing the next one.