Hey, not bad. I don't much care for the grainy look, and some of those planets are painfully over-sharpened, but the painted strokes I actually find pretty appealing. Some smoothing needed maybe on some of the strokes towards the bottom.
Some of the strokes just don't connect right and fit with the rest of the image. I didn't mean the whole thing. Also, the planets literally hurt. That's what I meant by painful. :p
yeah, Shouts completely right, in the quick view (smaller one) you can easily see how awkward some strokes look, but other then that your really good at this stuff