Tip 1:
Try to land a few auto attacks on your target at level 1 like 2-3 hits
and then pop your ignite and use your Q (Sonic wave) and congratz First blood is now yours
Tip 2:
When you see your enemy is near one of your minions try to use your W to jump at your minon and then use E right after for harrash
Tip 3:
Also try to use your W when some of your minions is low at health to give them a shield so the enemy will mess up his last hitting
Tip 4:
When you hit lvl 3 try to use your Q-E-W combo for better harrash like use your Q to jump at your target then use E and right after that use W to a minion to get away (dont try to do this when the enemy is under his own turret)
Tip 5:
Always have a few wards on you, not to ward the bushes but to escape example if you see you're getting ganked by a rammus and you have no where to go then place a ward near your turret or where you're and then use your W to jump to it

That was all thank you for watching my guide please leave a comment and tell me if i miss something or if this guide is just a piece of dirt