I sewed the open ends of my skirt together, stopping about 10" from the top so I could slip into it easily. Then I pinned the new valance so it adjoins its twin perfectly.
Pinned it along the length of the skirt, certain that it was straight all along. Well, it was straight.
But it wasn't even with the top edge of the skirt. It didn't meet up with its friend at the end like it should have. I DIDN'T MEASURE IT ALONG THE WAY LIKE I ALWAYS DO. It started out 11.75" from the top of the skirt, and ended up 14"-ish from the top.
My project for the evening is to pick out two rows of tiny stitches by the light of the fireplace, so I will feel like a pioneer lady. Of course I'm being nit-picky about my sewing of this costume after seeing the horrible things being sold in the thrift store a couple of weeks ago. So I sewed the fabric on with a 3/8" seam, and then went back over it and sewed the very top edge of that fabric down right along the edge. It looks awesome. Not so fun for seam ripping.
Okay, it didn't take me THAT long to rip the seams. After I did that, I pinned the valance to the skirt again, carefully measuring from the top every few inches. When I got to the end... still a lot of "underlap". Damn it.
But the good thing is? I didn't get ragey. Yay!