You do good work. Can't wait to see more. However, if I can make a minor criticism......I'd like to see more 'finished' line art. And what I mean by that is, either darker final pencil lines (instead of light whispy pencil lines), or inked final lines, or ...heh heh, just photocopy them darker before scanning them into the computer. This mostly applies to the first lady of pain drawing and the last two drawings.
I only say this because I sometimes fall victim to this too. I draw in my sketchbook, it looks fine there, but when I go to scan it in and post it on the internet, it looks kinda of 'light'. Easily fixed by going into darkness levels in photoshop or just photocopying it a bit darker before scanning.
But, if you like the 'look' of a piece being light and sketchy....then by all means, leave it as is. Nothing wrong with that either if that is your intention.