I crochet my very first fingerless mittens! I messed up on the first one I did because I couldn't get the ribbed cuff right! By the second time I got it down, then just added one more to make a pair!! They are very cozy! You can find this pattern over at Tampa Bay Crochet blog
I have very tiny hands so I modified the pattern by chaining less! My suggestion is to chain & then wrap it around your wrist fit to size then go from there!