Nevermind I figured out what I was doing wrong. Apparently, whenever you get some pieces seamed together, it becomes "easier" to seam together certain other parts. Also, you have to get each square really close to each other in order to seam. On top of all that, the order of selection *occasionally* has something to do with it all. Cloth is sensitive only when you are trying to seam. Whenever you get it all put together, you can scale, rotate, and move you squares pretty much where ever you want carefree and they will modify your cloth accordingly.

*EDIT* Carp. I'm still having trouble with the colar. I figured since all was going well, it would work, but it isn't. I have everything lined up perfectly, but it still won't seam correctly.