Kathryn Troutman is the expert when it comes to writing resumes for Federal job announcements.
Here's a GREAT video she produced on "How to Write a Federal Resume". While it's focus is on assisting veterans, the guidance Kathryn offers is universal! She gives excellent examples of the GOOD, the BAD, and the UGLY resumes and offers common-sense tips about what the HR Specialist needs to make qualification determinations.
I wholely agree with the information Kathryn offers and encourage you to view, bookmark, and review/use her guidance when applying for Federal jobs!