Hi everyone, First post to the forum and it's probably one that will show my novice and humility. I am ordering a MTM suit, and I have all the measurements down almost perfectly (a few are +/- about a half inch from separate measurements, but most are spot on). The only thing I'm worried about now is sleeve length for my jacket. Now the MTM maker is requesting that I use a good-fitting jacket to get my sleeve measurement. And there's the problem. I have never had a great fitting jacket. The sleeves have always been long, and have fallen to that dreadful middle of the palm position. The shoulders seem like they are just a tad too big (I could be wrong though. I am a novice after all). The length just fell down my body as if it were a dress. None of it was ever fitted. My question is how can I provide a correct measurement if I don't have a jacket to go off of? Can I take measurements from a good dress shirt I own and then subtract 1/2 inch from the length of the shirt sleeve when buttoned (measured from end of shoulder straight down to bottom of sleeve)? <--- And this I want to clarify: I would not measure and provide the sleeve length when it was unbuttoned, and then subtract 1/2 inch from that, correct? If I did, that would only mess up the 1/2 inch gap between shirt and suit ends when the shirt sleeve was buttoned, wouldn't it? Hence measuring while buttoned and then subtracting the appropriate half inch. Or alternatively: If a suit jacket seemed to fit well besides the overall length and sleeve length, could I not just roll the suit sleeves up to the half inch position from the shirt sleeve that it would need to be in, and then measure that to find the correct suit sleeve measurement? And if I use this method, I need to be absolutely certain - The shoulder seam on a suit jacket should line up with the end of your shoulder just as a good fitting dress shirt would, right? It shouldn't hang off the shoulder any bit? And now I'm embarrassed to be so clueless. Nonetheless, I'm excited to be here on the forum.