How to design your own script
Taken from clawgrip’s thread on CBB
STEP 1: CHOOSE A DIRECTION
Scripts can be written in a number of directions. The reason it's important to choose
a direction early on is because it can affect the shape of your glyphs and how they
interact with each other.
The most basic directions are:
The majority of world scripts are written in this direction. The Roman alphabet
follows this direction.
This is common in middle-eastern scripts such as Arabic and Hebrew, and many
ancient scripts associated with that area.
This is the traditional writing direction for East Asian languages, though nowadays,
left-to-right, top-to-bottom is also very commonly used.
This is used for some scripts, such as Mongolian.
This is extremely uncommon, but there are existing real-world scripts that were
written vertically. Both left-to-right and right-to-left examples exist.
If you are starting out, I recommend picking something basic from the above list.
However, there are more complex directions as well, though they are all variations
of the above basic forms. They include