Try Log Cabin, Courthouse Steps, Pineapple, Square in Square, or Kansas Dugout first. When you get those--it is much easier to make the jump to the odd shaped triangles. Those still get me on the brain fog days so I will cut up a foundation and glue it to the fabric and cut at least 3/8" around it. I hate wasting fabric but if that method fails; I'll cut a good size chunk and slap it on! That is my absolute last resort, though. If that fails--I go do something else or pick a different block.