Speed Up ´Tidespray Linen Cloth farm
In order to get more cloth the best place to start, is to learn tailoring. This will give you a little extra cloth.
-Cloth Scavenging Buff You can go learn the cloth scavenging buff from the tailoring trainer in the old Dalaran in Northrend. You need to learn Northrend tailoring first, then he will give you a quest. You can see in your proffeion tab if you have the buff.
-Tailoring Tools of the Trade - Synchronous Thread - You need to get the tools of the trade item in order to gain more extra cloth buff. This item i woth getting before you start to try to farm too much. You need to be level 120 and have zandalari tailoring in level 150, then the tailoring trainer in Zuldazar will give you a quest to start getting the pattern for the item. Its a questline, so you need to complete a couple of quest to get it.