I finished Erica's throw two weeks ago. Here's the end result:
It's really just a glorified granny square.
1. Chain 4 and slip stitch into a ring.
2. Chain 3(counts as one dc), dc twice into the ring, chain two, *dc three times into the ring, chain 2,* repeat from * to * twice more and slip stitch into the top of beginning chain 3.
3. Chain 3(counts as one dc), *dc in every dc to corner, (2 dc, chain 2, 2 dc) in corner*, * repeat from * to * four times and slip stitch into the top of beginning chain 3.
4. Repeat round three until the afghan reaches desired size. Change colors (or not) as you please.