Last Hitting in DotA Allstar

The videos are very self-explainetary.

I just want to give some personal experience to explain something not shown in the video.

1. When you last hit,try to stand on high ground instead of low grounds. Standing on the low ground gives you 25% miss which is very horrible. It is especially important for solo mid heroes.
2. Knowing the projectile speed of the hero is very important. Different heroes have different projectile speed (Range Heroes). Estimate the time taken for the projectile to reach the creep.
3. Training last hit without enemy hero is pretty useless, there is always one or more than one heroes on your lane during your match. Your enemies aren't going to let your free farm unless they are dumb. 
4. After early and mid game, getting last hit becomes less significant because your damage is so high that you do not need to purposely attack certain creep. This means that training last hit only applies to the beginning 20min or 30mins of the game.

I will suggest that you train with an insane AI. Since AIs are programmed to last hit and deny using computer logarithm, they are better than human in terms of estimating last hits. If you can beat them in terms of last hitting, you can say that you are pretty good in last hitting =)