I do like the composition - I can see the Spider-Man influence but, heck, you won't be the first or last to do it and your character is different enough.
My only criticism is the background colouring - as the character is a collection of blacks, greys and whites, I think he needs some contrast in the background. The royal blue of CoH fits many heroes but the darker ones benefit from a bit of architecture. Have a play with some backgrounds - could be fun just imposing him on a rooftop gargoyle or, for giggles, a beach 
Aside from that minor point - great work and keep it coming
I'd like to disagree with Artic Princess... and I shall!
I don't think the background has to be lighter.
I do think a little background would help the picture.. primairily the pose.
One small thing, is the left index finger.
Although it works for spidey as his finger gets a little flattened (but not to that extend... it's comics) yours is wearing a metal glove or has a robot arm, no room for any flattening, imo.
@ShadowGhost & @Ghostie
The Grav Mistress, Mistress of Gravity
If you have nothing useful to say, you have two choices: Say something useless or stay quiet.
thanks for the advice I appreciate it, haven't drawn in quite some time so any pointers are welcome.
Artic_princess, Yeah I would like to draw a proper background for him at some point I did the generic coh type background mainly because it was quick and easy and can be used for other characters in a pinch, as for the rooftop thing I think best keep him off rooftops for copyright reasons 
Shadowghost, I see what you mean about the finger as the tech-banded glove is supposed to be a metal/robotic hand in coh but that is not how I have chosen to interpret it on Kuraikaze, his left arm is a normal human arm and the tech banded glove is there because (to my mind) it looks like a really awesome sword guard, so the wrist part is metallic but the glove is material, also I tried to draw it as a mix between Comic book style and graffiti style (but I don't know if that came across very well) so it may be a little cartoony which may also explain why the fingers/hand look a little off as they are quite heavily exaggerated.
Thank you both for the advice and comments, strange really as I thought it was the robotic arm that would draw the most criticism, it took me ages to get it looking acceptable and I'm still not 100% happy with it (but I suppose I rarely am when it comes to my drawings)
p.s will add a character bio soon to give a little background on my heroes as I post them.
Hi There I'm new to the creative boards thought I would share some recent artwork of my coh characters, they're a bit sketchy but on the whole I'm quite pleased with them
so here is the first Kuraikaze:
In-game screenshot:
http://i91.photobucket.com/albums/k3...4-01-17-17.jpg
Rough sketch:
http://i91.photobucket.com/albums/k3...Photo-0012.jpg
Finished picture:
http://i91.photobucket.com/albums/k3...hKuraikaze.jpg
As you may have guessed the picture that inspired this was from a Spiderman comic, this drawing was not traced but it didn't seem right not to mention where I got the inspiration for Kuraikaze's pose in this picture.
All comments welcome, let me know if you liked it (or if it made you physically ill)