It's difficult to match that turquoise with other flannels and not have it look totally psychotic. But it looks super cute at tiny pants!
I'd like to point out that I almost matched up the lines of flannel perfectly without even trying to do so. You know that if I had tried, it never would have worked. Happy accidents lead to adorable pants.
I was able to whip these out in about 10 minutes. Because I used an old shirt, I just cut them out on the bottom hem of the shirt, so that I didn't have to hem them myself. This also meant that I could have a side seam and still only use two pieces of cut fabric. I used a pair of baby pants I had bought on super sale for a quarter at Target as the pattern, so you can pretty much use any pair of pants that fit well to make your pattern. Just fold in half, place on a fold, trace around leaving about 1/4 inch for the seam allowance and about an inch (or more if you're a messy cutter and ironer like me) for hem allowance at the top.
Then, basically, place right sides together, sew the crotch pieces together and then sew around the legs. Iron a top hem, sew it, leaving an opening, and insert elastic (which I happen to have just laying around, because I have problems.). Sew up the elastic to the appropriate waist length so that it stretches to fit, but won't cut off circulation, and sew the hole closed.
Easy Peasy, Lemon Squeezy!