Ravelry: Retro Vibe Square pattern by Johanna Lindahl
Ideia (Inspiração) de Crochê.
Dream Circle 12″ Crochet Square and Mandala - free pattern from Pink Mambo.
this could be useful
Ravelry: Project Gallery for Lacy Cross pattern by Jan Eaton
Owl Granny Square Crochet Pattern...FREE! How cute would this be in a different color palette for a baby blanket?!
12 Ways to Join Granny Squares - Baking Outside the Box
Making your first sun burst granny square corner
AnnieColors: Sunburst Granny Square Pattern
10 Perfect Crochet Squares for Fast Afghans - I like this because they are 12" squares, so less sewing together.