I've emailed Nathan to ask about making the collar tab optional, but haven't heard back yet. Right, Lance. Since this is 'MTM over the web', body measurements won't necessarily work well. Measurements for this shirt are taken from a button down shirt of yours that fits you how you would like this shirt to fit. I will post detailed instructions on how to do this once we have finalized the design and color options. When I measured one of my shirts that fits well, but was a little too big in the body, I actually spent a little time pinning the shirt smaller, seeing how it fit me, and then taking measurements off of the pinned shirt. All in all, I think it turned out well. This is definitely something you want to take your time on, because if you mess it up, you wind up with a shirt that doesn't fit. If you would like help from someone else, such as a tailor, by all means... The cool thing about this is that you can customize nearly everything including sleeve and body width (each in three places), collar height, cuff width, front placket width, and on and on.... There are about 18 different measurements you'll need to take.