Careful timing of your skills can proc your passive explosion at level 2.
Auto > Q > AUTO AUTO > be watching the burn timer on the big minion at camp. at 75% use your W and you should have 2 stacks > spam Q and it will give 3rd stack as soon as its up
Always Auto in between abilities at camp. E > AUTO > Q > AUTO > W > AUTO
Do not play this into anyone with a gap closer unless you just feel extremely confident on your chances. Xin, Yi, Jax, etc. Junglers like udyr, nocturne, or trundle etc are ok because they have to run at you and melee to do damage. If they have to run straight at you they are open to E > Q > W > R and if they arent dead or running, they will be rethinking their life choices at this time.