I have small hands so you might need to adjust the starting foundation single crochet by using a bigger hook, but you must have a multiple of 4 + 1 stitches in order for the shell edging to line up correctly, so adding or subtracting a stitch won’t work to change the size. I just found that using an H hook for my fsc made the glove much too big for me.
I used a beautiful ombre yarn for these gloves and the result is fantastic! I’m sure they’d be great in a solid color too. Show me what you make!