(TheShadowyOwl) Is Asking for Assistance in Middle Lane!

So, I've decided to main mid lane, and while I know there's other stuff I may be better at, I really wanna learn to play Roaming mid laners, however I find myself feeling a bit underwhelmed with my performance as of late, so I want some help from people who play the 3 champions I have selected to focus on down below. I'm gonna give an overview on how I play, then talk a bit about how I play the champion, the item set I go with, the problems I have when I play that champion, and finally problems I have with my gameplay in general. Overview: I like to play aggressive and keep the lead in my lane until usually level 6, maybe earlier, and what I mean is I prefer poking out my enemies with ability combo's, when I get ahead and i'm able to do so, I like to roam to other lanes and help them, usually a lane that's winning. And I prefer it if i'm not the one carrying. I usually play Taliyah like this, I get the usual Doran's Ring and 2 potions plus a ward, I usually like to ward somewhere in the bush in the river to protect the jungler if they go there. I get Q first and try to use my Q to get rid of minion waves or hit the enemy champion, then I get E and use it on the minion waves usually, then I get W to pull back either the enemy champion, or the back line minions. I like to play very aggressively on her, trying to deal tons of damage to the enemy so I can either get kills or get minions so I get that R early, so I have the ability to roam and wall off the enemy I'm trying to help kill. Final Item set (In order): Problems: I feel like i'm not using her ult properly, I feel like I'm not using it when I should, as of now I use it for transportation, and once per game a gank, I really feel like I should be using it more, but I don't know when. Also I feel like I should be using her combo's a little differently, as in I feel like i'm spamming my Q, E, and W way to much, at what points should I be using them? I play a lot of TF, I like too get W first, then get Q, and then get E, I usually use his R to get back to my lane or sometimes gank. I usually like to go with the W>Q>Thunderlords combo. Final Item Set: Problems: Similar to Taliyah, as in I don't feel like i'm using his ult properly, how is his ult meant to be used? And secondly, I feel like he's very easy to counterpick, so I'm not sure what I should do if I end up being counterpicked. I actually don't own her yet, so, all you Syndra mains, please go ahead and enlighten me while I don't have habits with her that I end up being stuck with.

Problems in general: I think it comes down to one major thing, I have a lack of warding, I really need to know, when you play mid, how should I be warding, especially if I want to roam and play aggressive, what areas of the map would you recommend I ward? Another thing is I feel like I have way too slow reaction time so I was wondering, is there a way to hone reaction skills? Or do I just have to play over and over and over again to improve them? Like I said, this is meant for improvement and I really want help, any and all tips and tricks are welcome, thanks for reading, thanks for any tips that are given, and I hope you all have fun on Summoner's Rift! [slayer-jinx-catface]