Hi, I currently have a vamo v3 with a kanger pro tank 2 and want to know how to get a bigger cloud than what i am getting now? thanks 
Well, the simplest solutions would be to get/build lower resistance heads, if you are up to building your own coils, i highly recommend ribbon Kanthal and cotton wicks.
You can also, as mentioned above, up the VG level in your juice. The difference in vapor between 100%vg and say 70%pg/30%vg is pretty noticeable. Beware though, higher VG juices tend to suffer from flavor loss and will likely have a slightly reduced throat hit.