in early you are squishy but still deal a good ammount of damage. play safe but if you see an enemy with your W's mark take the opportunity to hurras them.
ganks are hard to deal with but your e can be usefull (personaly i take e near level 4 or 5 becouse the extra damge on your q is qute good).
do not be afraid, try the flash 4th shot(only for experienced players or very confident ones).

with 2 items your damge will be impressive
nothig more to say do not overextend without a back-up plan

if you come to this stage you have already won
at full build you can 2 shot squsshies and with good knolege of the champ you can easly carry.

PROS
inredible high damage
medium skill-cap
incredible sadisfaction
CONS
low hp/resintences
low moblity
gets countered by burst cham with high mobility

thanks for reding this guide (btw it's my first),
have fun,
dont feed and
remenber that i'm not plat or diamond but just a simple Jhin main.