here is an even more effective
download baron replay ( i just did today )
and watch back your own games look for flaws like for example i played udyr today and started my blue warded his red my team mate warded his blue and noticed wukong is strugling at blue
i right ahead bearstand rushed over to his blue wanted to kill him he left i took his blue
than i noticed i was behind on him cause i wasted this much time yet if i checked his wolves i would have had a free kill
write down mistakes you make and try improve on them
be sure to not only watch yourself but also the enemy jungler, where you will not play every jungle champ you will most likely not know their weak moments yet now you be able to see where they where strugling
i noticed i wasted time at level 3 going for a gank bot lane (wich would have worked out perfectly fine if the adc had folowed up, so it wasnt a big mistake by me but time was wasted )
while i was full hp bot lane poking down a full hp jinx a level 3 20% health lee sin was doing chickens
i felt like invading lee sin would have killed me cause i was playing twitch jungle (team builder )
reksai and nunu are really not that hard to play but reksai takes some practise and nunu seems sort of situational i like to use him when im up against a jungler thata really depends on his buffs for example the enemy picks amumu im just gonne take white smite and wait for when he is clearing his camps run in there q smite and run away predict where he'll be next and do it again and keep that going but be sure to watch the map for laners coming to help him
id also sugest trying to pick up sejuani cause shes really op right now and verry easy to use (she is almost always banned do )
its hard to judge on vi for me cause i see everyone doing so good with her yet i am level 4 vi and stil suck allot with her
i honestly dont find kha that strong this time ( but allot of other people seem to be doing good with him this season so who am i to judge maybe im just not that good at him )
and j4 i never played