Please following this diagram measurement. for No.3.4.5.6.7 just tight but not too tight like lady photo wearing tshirt because I add extra room and for No.1. 2 . 8 If you have perfect size jacket can you following from that jacket will be better If you don't have please following like diagram measure from your body please. Measurement in centimeters please. Measurement for length arm look like photo lady wearing jacket will be good because sometime some people measurement have problem too short and too long I hope you do the right thing and meticulous as the diagram above because if you make a mistake in the measurements it was not my fault because I only follow your measurement.