Once the document is printed, take one of your rings that is the right size of the finger you plan to have your ring on and use it as a model to find the perfect measurement of your ring. Make sure to use the measure of the right hand to obtained the right size of your ring because the size of a finger is not the same from one hand to another. The pink circle should make the circumference of the inside of your ring without exceeding it. If the pink is not perfectly around it, you should choose a larger size. It is better to buy a ring that is larger than too small.