symetry,,proportion,,doesnt matter much what size you are,,,its all about symetry proportion and muscular development in the npc and anywhere else,,
very good genetic response to training and sport enhancing drugs is a must
time and will is a must too
something uniqe about your physiqe wil help too,,mainly shape of particular muscle group
coming on 100% on the day you are planning to get your pro card will help too!
and yes ray is good example for a proffessional bodybuilder,,even though he jokes on the internet,,he is professional as he been making money from it for ever