The Crescent in Ha

My first narrow band image. I've made two previous attempts to image this object in color that I'm not happy with. I'm encouraged by this to try again, and/or combine this with the other color data.

Image Details
Camera: QSI 683ws-8
Optic: Mak-Newt 190 f/5.3
Exposure: 12x15minutes Ha 3nm
Mount: Paramount MX
Date: July 14th a.m., 2012
Other: Imaged from Lake Mary, FL

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The Crescent in Ha