It's a good start, you're starting to understand the basics, try working on making your background more interesting, at the moment they're just one or two colours. Try adding some brushes or textures, or even a background stock
Keep it up
Haha, i was starting to miss you
Some stuff i forgot to post earlier -
http://i55.tinypic.com/2n6stup.png
http://i54.tinypic.com/16lfklc.png
http://i51.tinypic.com/wc02op.png
http://i56.tinypic.com/suvh2a.png
I did my research and found the alchemy symbol for earth, and that's what you see here, along with earthy colours and such -
http://i55.tinypic.com/2je5izp.png
Best i could come up with :/
Large Art -
http://i55.tinypic.com/287gbwg.png
Abstract skull thing -
http://i56.tinypic.com/15qymv5.png
And a new style -
http://i54.tinypic.com/bdrvcx.png