A. PROOFREAD! PROOFREAD! PROOFREAD!
(i.e., edit very carefully!).
B. Keep it to one page if at all possible, two at the most.
C. Use italics and bold to emphasize and highlight, but do not over do it.
D. Prepare different resumes for each type of position you are seeking.
E. Print on a laser printer. Use good quality resume paper...white or ivory are the most acceptable colors. You can print on plain paper and have it copied / printed (professionally) onto resume paper.