How Do I Get Better At League?

Hi. I'm Almapie. I've been playing LOL alot more frequently. Everyday when I come back from school, I play at least 6 games. I'm unranked, and I'd rate myself as an Less than Ok player. I have things to keep up like my CS, and PVP can get really challenging. I usually play Annie , Tristina , Eveylnn and Nunu.

In a rough summary, heres what I do wrong: Get too caught up in killing the enemy more that defending/Not feeding/not dying. Go to close when I'm playing as a mage, don't kill many minions (I'm fixing that. I think i'm doing alot better.), not planning my last hits, and not buying many health items. (Well, until the end of the game or when I die alot.).

I want to fix those things. I'm not the best at PVP, but i'm not the worst. When I focus, I can kill two people, when I dont, slay one person and kill myself in the process. (Most of the time I dont kill them lol.) I'm a total fucker when it comes to Wards/Vision, (Can someone explain to me why thats important?)

Theres alot of elo's in LOL, i know that, but i want to better my self in them. There's obviously things I'm doing wrong since half of the time I die without scoring a hit, but unlike the rest of my flaws, I cant spot them.

Sorry if this is vague. I'm quite tired from playing all night. [slayer-jinx-wink]