As shen, Getting level 3 quickly will be of utmost importance for you in this game. Clear the Jungle soon and once you're level 3, start ganking relentlessly.

Try to gank overextended lanes when possible and ensure that you protect the laner you're ganking with your W and Q. It will let you prevent the enemy team from snowballing the game.

Your counter-ganks will be really effective, especially once you get your Ultimate R. This also means that you can split push during the time you are not clearing the Jungle. As shen, Getting level 3 quickly will be of the highest importance to you in this game. Clear the Jungle soon and once you are level 3, start to glove unrelentingly. Try oversized gank of the tracks when possible and make sure you protect the laner that you are gaunting with your W and Q. It will allow you to prevent the enemy snowballing team from playing the game. Your counter-ganks will be really effective, especially once you get your Ultimate R. This also means that you can divide the thrust while you do not clear the Jungle.