What methods are there to level your particle hair? How can we very sharply level particle hair? The default settings are very good for random particle hair but for actually doing the opposite thing, what are the methods?

For example like the blanket above, as you can see some of the hair is pushed inside and some are way too long. How can we level them so that their hair(or fur), become more like that of a toothbrush? Sharply leveled. The idea is to create a plane leveled hair and then added with brownian and some clumps and curls settings to create a realistic blanket(using a texture as a source of color).  Here is the blend file in case the example can be clearly shown with the file itself:
Mainly, you have a non default parameter here : the brownian (agitation) field set to a value. Set it back to 0 to have a regular aspect.

After that, as you want to have a short hair (like brush), you may lower the segments (as their are used for the hair movement, mainly for long hair).

And to have more density, simply grow the amount of emitted particles.



As some faces are not visible, you should also use a vertex group to locate the hair where you want on the visible faces : in consequence, the visible faces will have more hair on them with the same or lower overall hair amount.