#1 go online and get the AFMS competition rules!!!
http://www.amfed.org/rules/#2 Study the rules carefully
#3 Decide which category you want to compete in
#4 Study the category rules carefully
#5 Ask any members of the club that have competed what they experienced in the judging
#6 See if any of the members are certified judges - ask them many questions
#7 Look at other member's cases and see what liner designs and colors work well
Things that will reduce your score:
Poorly fitting liners
Liner covers dirty or wrinkled
Labels not mounted well, incorrect spelling, incorrect identification
Items in case not clean, well finished, well designed
Item holders poorly made, etc.
Bob