you need to decide what are u going to do from the start if you're going to gank top start botside if the opposite start topside and try to know always where the enemy jg at and countergank him to protect your team controlling map is the most important in this role
I'd recommend watchin youtube videos of people playing jungle to learn fast clears and how and when to travel on th map.
Try to focus on one or two character in the jungle to adapt to the playstyle.
In general, Jungling Heroes will need more Health and Mana regeneration in their build to be effective. Most Junglers will take a lot of damage while fighting and use a lot of abilities, and the additional Health and Mana regeneration will allow them to earn more before having to return to base to heal.