Miss Fortune vs Jinx

Fire Double Up (Q) at a dying minion in front of a champion: if the shot kills the minion, the bounce onto the champion always crits.

Switch targets often: Love Tap (passive) adds damage on each new target, and lowers the cooldown of Strut (W).

Activate Strut (W) to get in position before Bullet Time (R): you instantly gain its max move speed bonus, plus attack speed.

Cast Bullet Time (R) on enemies who are CC'd or bunched up in a chokepoint: it's a channeled cone, and each wave can crit.

Take a short trade, then back off: with the minigun from Switcheroo! (Q), each auto increases her attack speed, so long trades favor her.

If you can engage, go for her when her support walks away: with no dash or leap, Jinx can only back off on foot.

Don't step on Flame Chompers! (E): they root the champion who touches them. Walk around them or wait for them to vanish after 5 seconds.

If you can reach her, focus her first: any takedown gives her a big speed boost with Get Excited! (passive).