It looks pretty good to me. The background looks a bit too dark and perhaps clipped. Other than that it's great.
You will definately need to get the flats worked out. I use the same imaging system and flats are definately needed. I use Al's virtual light box and collect flats by pointing the scope at my computer screen at the end of each night. I use the Sky Flats Assistant plugin for maxIm DL to automate the procedure. You will need to make sure that the exposures are longer than 2 seconds so that there is no shadow from the shutter. I aim for about 4 or 5 second exposures.
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