No pattern, all guess work. I wanted to suss out how to make a sweater using mosaic crochet, since I don’t know how to knit but love the simplicity for creating designs. I made it as one giant piece with a hole for the neck, and then seamed from wrist-to-hem and added ribbing. Other than needing to make the sleeves much less wide, I don’t think I’ll change much for my next one. Super fun, right?