How to play Squint: Board Games

About Squint, from BoardGameGeek:

Using any combination of the 72 cards with various shapes on them (such as a cross, various sized circles, wavy lines, etc...), players take turns trying to convey one of the words on a "squint" card. The words have varying degrees of difficulty, from one to three points. Any of the non-building players can guess what the word is. If a player guesses the word before the timer runs out, both the "builder" and guesser receive points.