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first post! wooo

The name is Giorgia. I've been active on the internet since basically forever. In the late nineties/early 2000s I hung out on a forum called URD (u r drawing). I think I went by Chibi or something like that back in the day. Is anyone from there on here?
I just really wanted to get back into an online community that's specialized in art and creativity and this one looks pretty nice... So here goes nothing!

A friend of mine and I have been collaborating on this TMNT fanart of Shredder, Bebop, and Rock Steady. I'm doing the coloring and have been having trouble getting Shredder's armor to look like actual metal. Any tips?
Also any criticism regarding other aspects would be greatly appreciated.
Here's a link to the drawing so far: http://www.newgrounds.com/dump/item/1b4645f9d0fe9d7de9c55e530f01fe0b