Get a first blood, farm well, watch out for ganks, DON'T lock the enemy on his tower, you WILL be ganked, and probably die, if you get like 3/0 or 4/1 you can try to "Call" the enemy jungle for a gank, of course, you don't have to type on global chat: "gank me, noob" , just stay advanced on lane, and he will come sometime. This beeing said, good luck on your first minutes, until the end of lane phase.

1- This build works PRETTY WELL for those engage champions who will try to hit you when you're farming, or for those ho tries to kill you soon as possible, because if they try, you just have to hit the blade of your axe (Q) on the enemy if you use it, this will give you some health to kill him. Don't use E to start a fight, begin with auto attacks, to "lure" him, when he tries to run, grab him!
2- This build is 2x effective against melee champions
3- if you're suffering against an AP champion, you can rush a magic resist boot, and a Spirit Visage to handle him.
4- never dive champions with this build on early game, only if you have your jungler with you, or if you have your ultimate ready and the enemy is with 3 stacks or more.
5- don't be scared of using R against the champion if he is with only 4 stacks or less, this may save your life