The measurements are in, the fabric selected (stripe 176), the options chosen. It's now time for me to plug all of the information into the order form. Before I do, however, I have some pre-purchase questions. 1) The measurements are of my body. Should they instead be of my favorite shirt? 2) What are some recommended standard collar styles, heighths, and tie spaces? This is for a casual shirt that will never be worn with a tie. 3) The same for cuff styles and length. If I chose flow-back, does the length differ from a French cuff or single cuff? What are length recommendations for each. I'd very much appreciate any guidance. Ordering from Jantzen sure has a learning curve, but I'm hoping it's worth it. Thanks.