The ADG pattern is awesome too (not free). I used the Katrina pattern for years with fleece (and love it) but went and splurged on a AWESOME pattern the first time I sewed with interlock. Have fun!
Laura ~ Soul mate to Chris Mommy to Billy & Brenna
Midnight Stitches ~ applique clothing, hand-made dolls, & crochet items.
Lots of custom slots and RTS items at Etsy!