Nice pattern for a quick gift. It has just enough interest to make the mittens stand out and look pretty while at the same time it is a fairly easy knit.
I didn’t want these to be as long as they are in the original pattern and only knitted another nine knit rows after the lace pattern before starting the thumb gussets.
I worked the increases for the thumb gussets as M1R and M1L for a neater look. Here is a good video by Knit Purl Hunter to see the difference: M1L, M1R
I am following the advice of some fellow ravellers and am knitting the thumb in medium.