I agree with Bear to make sure all are of the same fiber content and, hopefully, 100% cotton - but that's just a preference, as she already has said.
As for patterns, if you're looking for a scrappy type look then I would take a browse through the Quilted Twins - Free Patterns site here ------>
Quilted Twins FREE PATTERNS
Other sites...
GE Designs by Gudrun Erla (I love her Kira pattern),
Jordan Fabrics (lots of patterns/tutorials/videos to browse through and if you really want to go down the rabbit hole try this site
30+ Awesome Quilt Pattern Sites which links to tons of fabric manufacturers & designers.
Keep us posted on your progress!