personally, I tend to leave my drawings in sketch form, because once I start defining the lines it ends up looking fake. >_< if you really want to ink the picture, but don't want to lose the sketch quality, have you tried using different thickness of black pens to go over the sketch lines? three common nib thickness are 0.7, 0.5 and 0.4, and I have a 0.38... or you could use one pen and vary the number of strokes.

no, no, I wasn't referring to your pictures when I mentioned the colour thing. colour does cartoonize things, but the way you pull it off is okay - you use shades, and not entirely block colours, and the overall effect is a good one. especially that gold-red picture, that was a brilliant example of good colouring. ^_^