like many others mentioned, i have found that getting up to, say lvl 15-20, will let you kill things that drop this linen cloth if you need mass amounts of it.
if you need it as you go along, for first aid, then you'll at least get exp from these mobs that you farm. if you can afford to wait a while before starting your tailoring career, being in the high teens/early 20s will let you get them much easier.