Dixie, you're doing a great job on this! I also followed Cutie's tutorial on this and have one in the works. She is a fabulous teacher! What I like about her method the best is that there is very little fabric waste because there is no fussy cutting.
OBW = one block wonder. That's a proper name of this block and there are books written about this block with that name. Hexagon is another name for it.