What I like to do is hug the wall of the neo and shift to the edge of the block and then I would simply jam. Jamming is when you press your sprint key and the space bar at the same time. In this case, w + ctrl + space bar.
But this technique only really works in 1.8.9 and for z facing neos. You can check the facing of a jump by pressing f3!
For x facing neos on the other hand, it would be best to also hug the wall and shift to the edge of the block, but then go back a few times so that you are not too close to the wall, and then jam once again.
For versions other than 1.8.9, I would go in the middle and shift to the edge and then I would jam and turn my mouse. The only thing that stays the same for doing neos is jamming. Rember, practice makes perfect!! Goodluck :D