Miss Fortune Build
Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
As Miss Fortune you are not really a champ with HP. This is why you keep the range that you have. When chasing a good tool is to use "Make It Rain" to slow enemies. When in a heated 1v1 in the solo lane which is where Miss Fortune should always be, you should try and conserve your mana and auto attack with the range that you have. When you are about to kill the enemy throw down "Make It Rain" and "Exhaust" them so that they do only misses to you. Now you attack them with auto even more and then lay "Ignite" if they are low hp and trying to get back to turret.
Hopes this helps.