If you want to rush:
1, the previous jewelry drawings can be learned from the trainers in the main city. You can have a look. If you can learn, the drawings of the trainer in the main city can completely raise you to 600. As for 300, no problem. (I'm BL)OG's trainer's position: East of Honor Valley River (east of pandaren new camp, where you can buy mounts), there are two rooms, one can learn jewelry and mining, and the other can learn forging.
If you can't learn this place, you can try it in outland. There should be trainers to learn in Outland Hellfire camp (BL is Salma).