hello there!this is my first guide!note that i am still level 19 so i will not suggest more masteries.i also dont use runes because i never liked them...

this is the way that I play Tristana and i win a lot of matches.Draw A Bead(passive)in combination with attack damage can be a deadly combination.think how you could also attack into minions with a lot of damage and Explosive's Shot passive...crazy farm!!!
no comments about attack damage with Rapid Fire for pushing towers.

just attack damage and critical strike chance masteries,along with some life steal and attack speed.nothing more,nothing less

i usually start off with a Doran's Blade.when i go back i will buy a second one so i have +200 health,+20 damage,+6 life steal..perfect for starting.then buy boots and convert them into Boots Of Swiftence or Berserker's Graves(i usually take the second one for attack speed but swiftence is cool as well..).then buy Pickaxe to upgrade you damage(you can sell Doran's Blade to buy it before boots but i don't recomend this).Generally get ASAP your Infinity Edge to farm/push/help in lanes/gank more.then start your Bloodthirster/Last Whisper(i usually take Bloodthirster to stay on lane more but Last Whisper is awesome so i am not sure about this desicion..).

1st Skill must be your Explosive Shot...it's passive is hell awesome with attack damage to farm more and more and more and more....also it's active is a better Ignite.Then maximize ASAP your Rocket Jump...you can run with this,you can farm,you can ks easy(jking),you can gank,EVERYTHING!it is a better flash with more range,shorter coooldown and it does damage.Rapid Fire is cool,can't say but leave it for last(or get it at evel 1 to push but anyways max it last)when you push turrets/inhibitors/nexus.Buster Shot is cool for last hit so remember to use it only there or to send an enemy back.it's eff can be bad if you cast it at the false time and you will help enemy champions to survive

i take flash and ghost to escape and junt easy but cleance is cool if you are facing slowers/stunners/fears/etc.

this is the way that i play tristana at fast.i will upload a better version(more detailed) soon so stay tuned!!!