The wonderful mittens are done. And they turned out truly wonderful....

I cast on 32 stitches in Freedom Spirit wool, worsted weight, 22st / 28 rows over 4 inches.

The first bit is from the fetching fingerless gloves:
K4, P1 for 5 rows, Cable to the back (front for right mitten). Repeat 3 times.
Then increse ever set of 4 stitches by 2 stiches over the next 12 rows (I increased half the sets before the next cable row, and then the other half before the second following cable row). Cable rows in the body of the mitten: Cable every other set of 4s, then at the next cable row cable the other sets. Cable row after 5 rows.
Make thumbhole. I knit 7 stitches with a constrasting yarn, put them back onto the neddle, and knit those stitches with my yarn. At the beginning of the row for left mitten, at the end for right. Approx. 20 rows in, depending on how long you want your mitten to be (how far down on your wrist). Start decreasing when mitten is longer than your pinkie. BO when you only have 18 or so stitches on each needle).
CO 3 stitches at each join of the thumb, 20 stitches all together. Knit to apropriate length.