I have a camel hair jacket I've been messing around with as a tailoring experiment. So far I've taken out some of the "canvas" in the shoulder and chest, to good effect IMO. I noticed the other day that the sleeves are quite loose, but the armholes/sleeveheads are not particularly large. Is there a way to slim the upper sleeve down some? Anyone had this done? How would I go about doing this? TIA.