Not only did I supply them with the image.
I properly linked it. :x

However I supplied them with an image that showed both.

That's cause I'm bad like that, son. They call me quick draw, McBob...

GOD DAMMIT BOB, You beat me to it.

http://i19.tinypic.com/2my5352.jpg

Looks like a shitty rip-off of the original game sprite.
You didn't change the pose, you basically stole the AA  on the original but made it worse

   I'm sorry, but I just looked up the Earthworm Jim game, and easily found a sprite that is a dead on ringer with yours, from the GSA sprite archives. It's animated. Here's the link:

 http://www.gsarchives.net/snes/earthworm_jim/sprites/animated/Jim_shoot_gun_right.gif

   I put yours and it side by side, and noticed that they both basically share the same shape and stance, and basic form. Your version, however, looks a little more sloppier. To be honest, it looks as you copied this sprite from somewhere, may even be from the link, pasted it on to whatever pixel program you used,and tried to draw another version side by side, basically replicating it. It's kinda obvious when you put the two together, they are EXTREMELY SIMILAR.
   I don't know how exactly it slipped by the mods, being that it isn't exactly a direct rip, but it does pose a question to your character. I also do see that you responded below in your post, that you did use reference to the orginal Earthworm Jim games. But it begs the question: Did you actually USE the reference, or draw anything your self? So please, in the future, try creating pieces that are of your own creation, not pieces that are knock-offs, basic replicas, or hand-drawn copies of another person's work. You'll never learn, or get any better from doing so.

yeahhhhh ! Earthworm Jim !!! 'love himmm ! why don't you do a small animation with his gun'shot?

Fantastic, I love the expression.

I used reference from original Earthworm Jim games

He's such a great character. You've captured him well. Did you use a reference online?