How can i make a blade out of plane like in the tutorial? In the screenshot on the right it's how the blade should look like from the tutorial video. On the left is what i have down so far. 

When i select the left bottom corner vertice and then on the left menu click on Translate when i change the x or z i'm not getting nothing even close to this.
In my model it's like extrude it.



This is the tutorial: Tutorial

And he make the blade on minute 22:24
It looks like you should use the bevel tool. Switch to edge selection mode and select the edge you want to add a smooth edge too. Then click cntrl+B, you can change the size by moving your mouse up and down, you can also make it smoother with the scroll wheel.

Is this what you want?