The pattern says to use the "backwards loop" method. I see from video here that that is also called Single Cast On.
I *get* it, I just don't understand how to do this in the middle of a round. I've put the thumb gusset stitches on a stitch holder. I'm trying to add the extra stitches as directed on a dp needle, but I get a long strand of yarn in between the stitch holder and my new dp needle. Since these extra stitches I'm casting on are to "close the gap," it seems odd that I am creating one!
Any tricks I should be aware of? This is my first pair of mittens. I figured if I've handled socks, I should be able to make mittens, right?