What I did was serge the edges and then took it to my sewing machine and used a wing needle and a zig-zag stitch with no thread. I had to leave my bobbin inserted but didn't thread the bobbin thread in order to keep my bobbin sensor from going off. I only punched the holes through one layer of flannel and turned the serged area in as I did the crochet, just as you explained on your blog. I lined up the left side of the zig-zag stitch about a quarter of an inch away from the serged area. (The right side of the zig-zag stitch fell just to the edge of the serged area).
The blue one turned out so nice. I only used every other hole and it only took feeling around with the crochet hook to find the holes since these "old" eyes couldn't always see the holes. By doing it this way, your holes are perfectly lined up and the tension was perfect and all the corners lie flat....Hopefully others who don't crochet will try this because it really wasn't that hard to learn. And, of course, YOU and your little blankets were my total inspiration!
Betty, thank you for the kind words, and thank you for sending your pictures. You did a fabulous job, and your blankets came out great!
Since I'm on the subject of these blankets, I'm going to share the stitch pattern I used on another blanket I made this week. This "shell" edging was simple to crochet and was done in only two rounds.
Round 1: Single crochet around. Make sure your single crochets are fairly close together to prevent the fabric from puckering.
Round 2: chain 1, sc in first stitch; *skip next stitch, sc in next stitch, (3 dc, ch 2, 3 dc) in next stitch, sc in next stitch; repeat from *around.
Since I don't count my foundation single crochets, the amount may not work out exactly for a complete pattern repeat. In this case, I simply adjust my stitches when I get about 8 inches from the end of the blanket. With the rosebud blanket I ignored the "skip next stitch" two times, and my pattern worked out just fine.
Okay, that's enough of these blankets. :-)