Good job Lee.
The line weights aren't too much, colors are good, and composition is clean.
I've a sore spot when it comes to colors, though. This is not directed a you, more a general gripe. I notice linear patterns of dark pixels in the background. IMHO these unusually bright or dark pixels detract from the overall appearance if the image. Unless you're applying a gradient, I'm of the opinion that a field of color should (ideally) be made of one color of pixel. I know that in certain styles, as in 'impressionism' different discrete colors are put on the canvas, mixing in the viewers eye, not said canvas. I think this technique is out of place for scan-art.
But that's just my opinion. Feel free to disagree.
You're doing well; keep up the good work.