Help with plat jungle.

Hello everyone,

I need help to become more consistent in hyper carry with the jg from plat 3 to diamond.

If I smurf from bronze 5 to plat 4, I have a 80% + win rate. But the moment I get to plat 3 it get messy.

I main shaco jungle and ivern, I wanna know what exactly Im supposed to do to get a high win rate in mid plat low diamond, From a to z.