Alright so, Fiora is my main Champion. This build guide I've been inspired from others but alittle modification I put in.

Early Game:
The dorans's help a lot early game and activating your riposte will help reflect damage or a great evasive maneuver. Using The summoner spell: Flash, and ignite. Will also really help early game flash for evasive or going at a enemy as well as the help of the lunge ability. Ignite will help finish off the enemy.
Once you have all three abilities activated you can do really good damage by simply lunging twice at a enemy then quickly press the riposte and burst of speed, if you have the summoners spells ready you can simply flash to them basic attack or ability's if available then ignite. Fiora is a great poking champion i've noticed. Once you got the hang of it you can just repeat the process, farm minions,and build.

Mid/Late game:
Once you got at least the ninja tabi,infinity edge, ghost blade, and Hextech gunblade you should be good to go, with all that attack damage and life steal it will be quite hard to get killed if you are almost dead just flash if available or activate the ghostblade and run away, or you can use the ghost blade and burst of speed for a lot of attack speed as well as the hextech gunblade for great magic damage. You can heal easily buy farming minions. Then once you've got a lot of gold , you can finish off your build and you can be really op with the amazing amount of attack damage and attack speed from burst of speed and the ghost blade. You can even solo baron, or dragon if given the chance, and with all the armor you're able to tank a turret. Take note practice is key to actually doing good with the champion so don't blame the build just because you had one bad game or two, things take time to get used to a new champion. so have fun, and slain all your enemy's

Some of my good games: