You can always counter jungle in lower elos such as gold- bronze, now counter jungling in higher elos is a team effort make sure your team is with you unless you know the enemy champion that you are going to counter jungle is to weak to 1v1 you. Note: learning how to micro jungle creeps with boxes and avoiding those few autos is crucial. In addition, if you are going to just farm don't play shaco, Shaco needs to have an early presence so make sure to gank and tax when laners aren't in lane or hold(holding is usually done in higher elos).