Need some help to improve my skills

Hey guys, i'm a Dota 2 player. I started playing 3-4 months ago i think, and i realised that my best role is the support role, but i also like playing heroes like Meepo, Alcheimist, Razor, ecc..
Anyway i was wondering if someone has some free time for helping me to improve my skills as player. I don't need much help with heroes in particular, just want some tips for playing in a better way. My goal is to reach the ''High'' skill bracket.
I'll be really glad if u can help me guys, and if u want something back, like an item or something like that, write down your conditions!

Let's play. Add me :)

Well, bro, thanks for the asnwer ^^, i added u, my Steam Nick is: [Go5] Cptn. Lama, so if you see the friend request it's me! I also saw that u're american, well, i'm italian, and that's not a big problem, just tell me when u can play and i will try to log in too :3