I'd take the shirt and pin it out flat on cardboard, then take pictures with the tape laid across the measurements that Ricky wants. You'd have to look at the site or ask him, or undoubtedly someone else here will have input as to which measurements.
I placed a couple of orders as far back as late-May. However, due to the necessity to make a number of significant changes to my measurements, Ricky thought it best to start over with one shirt to check the fit. I ordered that shirt on 25 September. On 22 October Ricky e-mailed to tell me he was making the shirt. I really hope I get my shirt soon.