Forum:General Deck construction tips

Hi, this isnt a post for specific deck help, i am looking more for tips on general deck construction....i was pretty good at yu gi oh but i haven't played duel monsters since the first yu gi oh series. although i know how to use syncro/Xyz monsters its all a bit over whelming.....any tips will do?? i.e ideal deck size, composition (monsters 2 trap 2 spell 2 tuner etc).