These are two sites I've found helpful. They can sort of give you a way to step outside your own head and read your work with a different eye.
1.
http://www.margotfinke.com/Scroll down until you see
"Self Editing Tip Sheet" and click on that.
N.B. this is a children's writers' site, but the editing tips, while apparently simple, are good.
2.
http://www.carolynjewel.com/forwriters.shtmlThis is a romance writers' site, but the information can apply to all fiction writing. It is very well done, amounting to a workshop on in-depth editing.