Looks like the preview seems to have been save as a jpeg file of some sort...lots of unneeded colors...fix that, and I'll submit this in for you...
Please make the background transparent, or else the piece won't be allowed into the gallery. We don't allow white backgrounds in the gallery that serve no purpose, just so you know. Also, you can use freeware on the web, like iaza.com, to transparify the piece if you don't have the means to do so offhand.
sending back for revision...
Thank you for obliging...will submit for you...