Getting an Avocado Tree from an Avocado

As I wrote earlier, I had bought an avocado today, whose seed I want to turn into a bonsai tree. Just for the sake of completeness, I will write how to do it:
1 Get an avocado.
Carefully cut in in half without cutting too deep into the seed.
Eat the flesh in salad, guacamole or just pure with some salt, pepper and lemon.
4 If necessary, clean the seed.
5 Get three toothpicks or similarly thin sticks and  prick them into the avocado seed about a third from the top (the pointy part).
6 Get a container like an empty mustard or olive glass with a diameter not much larger than the diameter of the seed.
7 Place the seed inside using the toothpicks to not let it sink in completely.
It could look something like this:

Avocado seed in glass

8 Wait. And refill and change the water from time to time.
(I know, I could’ve added that to the previous post, but I wanted to be able to find it easier, so I can later determine how long it took to germinate.)