These bespoke Final Fantasy Lego models are the creations of somebody known as Kakurelegositan. There’s an entire gallery of similarly excellent designs at brickshelf.com.
Put on your best Squall Leonhart poker face (i.e. look as miserable as possible) and deal yourself in with a set of Final Fantasy cards from japanimation.com. Memorize the designs on each card for the ultimate in cheating.
You can make this stuff out of ordinary paper. Feed it through a color printer, chop up the parts and spend the next few hours gluing it all together until it resembles the real thing. Patterns and pictures can be found on paperkraft.net.