@doraemon maybe try using a completed bracelet as a guage. Wrap it around your wrist and count the rows it takes to start a design where you want it. Or you could start the bracelet and every 5 to 10 rows measure it on your wrist.
I can't wait to make this bracelet my daughter is in love with elmo she is 16 lol she has this picture cut out and in the back of her phone in her clear case