Thumb gusset instructions

Anyone know some good illustrated directions on how to make a thumb gusset for mittens? Thank you!

I can’t find anything (doesn’t mean it’s not out there!)…is there a particular problem you’re having, or do you just want to see it worked?

I don’t know of any pics, either. I can direct you to the pattern that I use for all of my fingerless gloves & I had no problem with it, perhaps that will be of some help…have a look @ this pattern

I just wanted to know how to do it for future reference–I was trying to decide if I should go to a class about how to make mittens where the only thing I didn’t know how to do was the thumb gusset. Those instructions do seem to make sense. Thank you all!