Simplicity 1544 - is getting better and better with each shirt. If you recall (which you very well may not because hello, that was over a year ago....) I made changes to the pattern to create a convertible collar style. This really helps cut down on the bulk when using a nice plush and hefty flannel. I opted to go with this style again because I went all hog wild and decided to splurge on this lovely Kaufman Mammoth Flannel. It was Mr. AFS's birthday after all and he definitely deserved a handmade something from me because I've put him through his paces in the last year or so.
this method from Sewaholic. I used to cut them out one piece at a time, but I've since been converted as I feel the Sewaholic method lends to more accuracy.